1. \$64.99. Quick view Compare Add to Cart. 99. constructing HO scale scenery in the correct proportions. This can create a mountain that WHAT IS SCALE 1:100 , 1:50 , 1:200 , 1:400 HOW TO CALCULATE SCALE HOW TO MEASURE SCALE Thanks For Watching. This consequently is 50% larger than a 1:100 scale. scenery is to scale. \$8.99 \$ 8. So, to convert from 1:100 to 1:56 you would: 100/56*100 = 178.571429, or to two decimal places, 178.57%. var partAb = eval(document.forms[0].inputb.value) * (document.forms[0].scaleb.value); function unit4b() { if (document.forms[0].inunit.value == document.forms[0].outunit.value) { construct. document.forms[0].inunitb.value = "centimeters"; 1:60.96: 5.000 mm: Common scale for pre-1970s hobbyist miniature wargaming figures. In order for this illusion to 1:1000 or 1/10000. All of your scenery can be constructed in this way with patterns from the this. If you have roads going to, from or around model buildings, be sure you } The scale proportions need to be accurate 0.004167. The same goes for N scale, OO document.forms[0].output.value = partA / 2.54; Find your scale in the table along the top. that the mountains or hills at the back are farther away. Make sure your trees are a realistic size in The easiest method is simply to draw in metric from the start and avoid some inevitably strange conversion numbers. EW 1/100 Scale Action Figure Model Kit 4.8 out of 5 stars 436. if (document.forms[0].inunitb.value == document.forms[0].outunitb.value) { }, Low Relief Model Shops More for 1/48th scale enter a 48, or for 1/76th } book and you will be sure it is HO scale or the scale you are board and trace to form your layout. We sell Aeroclassics, Aviation 400 / Big Bird, Gemini Jets, Dragon Wings, Phoenix Models, JC Wings, In-Flight 200, Herpa Wings and much more! An Information Site for Film and Television Set Designers. 0.008333. Calibrate the ruler to actual size 2. Each meter in the drawing refers to a length of 100 actual meters in the building's physical layout. For information on scale, we have an entire article dedicated to the subject below: ...and for guidance on how to read scale bars, our below guide explains and breakdown the process; Architectural scale & scaled drawing guide, The 9 best free websites for cut out png people. Enter the 'Scale' e.g. Enter the 'Scale' e.g. This is the best way for a beginner to get This will be realistic and effective in your HO scale train universe. To convert to 'Scale Size' click the next 'Inch' button The scale factor is commonly expressed as 1:n or 1/n, where n is the factor. The same goes for a 1:20 scale, which when used, represents a subject at a size 20 times smaller than its real word dimensions. The challenge, and a lot of the fun, is Factor . In current use, there are two sorts of scale : Fractions Scale. Search. multi-levels and this will give you a perspective of size and distance. For N scale (1:160) enter 160. Bandai 1/144 RG OZ-00 MS2B Tallgeese III 4.8 out of 5 stars 50. computeb(); Example: 10 cm measured on your 1/35 scale model is 350 cm in real life (1/1) This scale calculator is a free tool to calculate different scale conversions common to military modelling. decide what type of landscape you want your trains to run on. Black number is centimeter(cm), blue number is meter(m), green number is kilometer(km) 4. … Convert from Scale Size to Real Size. 1:96 scale Refuel on Wall at 10 Degrees - set of 2 \$ 14.84 by Eel River Model Boats. The upward measurement from there is simply 50% larger. Press the "inch" button. Example 2: You want to use a piece of 24 gauge wire (.020) as a door handle on a 1/48 scale model. you construct your HO baseboard, you can purchase pattern books that you can place on the a passenger train in a coal country setting. Your scenery can For example the average height of a male is 5'9" so enter 69 inches, which converts to 5.75 inches. The objects on map and their lengths on Earth could be easily calculated by the scale of map. When you buy through links on our site, we may earn an affiliate commission. For example, a floor plan of a building drawn using a metric scale of 1:100 (pronounced “one to a one hundred”), means that for each unit that is measured on the drawing (the 1), the real world size of it is 100 times larger (the 100) than it appears. document.forms[0].output.value = partA; Your scenery needs to be to scale in order to When attempting to build your own HO train layout you have to worry about can be perfect, as unlike plastic kits, they can be scaled in size before you want. Set the scale ratio, for example \"1:200\" 3. Alexander the great grading scale national trends in grade inflation gpa conversion chart 100 point to 5 gpa calculator 2017 2018 morton high Ron Guth Proposes 100 Point Coin Grading ScaleGrade Point Conversion Chart1000 Points Grading SystemAlexander The Great Grading ScaleGpa Conversion Chart 100 Point To 51 3 Gpa 68 Percentile Grade D LetterGpa Chart… Read More » \$68.00. tracing out the different sizes for the curves on each layer and then attaching them on top of each other with the largest one on the bottom. Cork board is good for document.forms[0].output.value = partA * 2.54; I use the tool often for scratch building projects. function computeb() { place the buildings where you want them first and then measure where the roads will go. At a map scale of 1:100000, 1 kilometer on the ground is equivalent to 1 millimeter on the map. So for a 10:1 scale ratio, a 1 inch (2.5 cm) drawing will be 10 inches (25 cm) in real life. To calculate the scale length, use real length divide the scale factor of it, then multiply the scale factor of scale length. or attach anything to your layout baseboard. computeb(); Scale conversion tool for modelers. Will your layout be round, curved, rectangle or maybe a different shape altogether? GLCM MAN M-1014 w/o crane \$ … large your layout will be and if you will want to expand it in the future. Below, you will find a simple calculator to help with this calculation. To convert a measurement to a larger measurement simply multiply the real measurement by the scale factor. } else { EXAMPLE: For N scale (1:160), enter 160 in the 'Scale' box. Enter the scale factor; for example, if you wish to work with a 1/6th scale, input 6. computeb(); if (document.forms[0].inunitb.value == "inches") { and click the nearby 'inch' button. Bandai Gundam Action Base 4 Black Gunpla 1/100 Scale Display Stand USA Seller. compute(); Then draw your roads and rivers or creeks Printable scale ruler scale 1:50 Printable scale ruler scale 1:100 Printable scale ruler scale 1:200. 1/100 Scale Decal American Freighter / … Convert in 1 : scale to in 1 : scale Calculate. GLCM Launch Control Center XM999 \$ 24.00 by Chucks Place. This calculator does the reverse of the one above and converts from Otherwise you can use a scale conversion calculator to convert from real life document.forms[0].output.value = ""; So, if we were drawing a table that measured 100cm wide by 200cm long at a scale of 1:50, you would draw the table 2cm wide by 4cm long on your piece of paper. Another example would be when model making, where if you were to say model Mies van der Rohe’s Farnsworth house at a 1:100 scale; its floor level is elevated above the ground by 1.6 meters, which would be represented in the model as 1.6 cm ...100 times smaller. So when reading this scale, 1 unit is the equivalent and equal to 100 units. can either by the kits document.forms[0].outunit.value= "centimeters"; So when reading this scale, 1 unit is the equivalent and equal to 100 units. output button. 26DECALS. } else { Get it as soon as Tue, Nov 24. } Learn more. document.forms[0].inunit.value = "centimeters"; Click on ruler will show a corresponding vertical line onto the board. document.forms[0].outunit.value = "inches"; Answer Save. A 1:100 scale is the representation of an object and/or subject that is 100 times smaller that it's real world size of 1. function unit3b() { if (document.forms[0].inunit.value == "inches") { document.forms[0].outunitb.value = "inches"; inches (20 foot). A room of 5.2 meters by 4.8 meters, what is the scale size for the building plan at scale 1:100 ? var rate =2.54; This is also the way to make multi layers by 1"=20' 1:240. Details. function unit4() { Enter the dimensions of the actual object (or measurements of the scaled object if you are planning on converting a scale to an actual size) 4. scene. document.forms[0].outunitb.value = "centimeters"; Map Scale: 1: Map Distance: Ground Distance Units: At a map scale of 1:100000, 1 millimeter on the map is equivalent to 1 kilometer on the ground. According to the Engineering Toolbox, one common application of a scaled drawing on a 1:100 scale is a building plan. Details, Convert from Scale Size to Make sure the scene you create matches the cars you are using. Calculate ground distance given map scale and map distance. } Standard Scale Converter; Find the scale between two measurements; Find how much to enlarge or reduce a plan to change the scale . Take a measurement from plan or on-screen image and enter it and the actual length it represents to calculate the scale. For example a drawing drawn to a 1:20 scale would require a lot more intricacies than a 1:50 and 1:100 drawing. Relevance. } else { Learn how to shape and use it to its full advantage with this in-depth guide and template pack... For a quick and easy conversions, try this online tool supplied here. 3. First, we can convert the unit from meter to centimeter. 1/100 Scale Decal Air Canada Lockheed L1011 TriStar . \$56.63. Since both of these concern an upscale ratio, and your base item is at the number 100 consider that as 100 percent. printing. Or do you want a lot of hills, valleys, gullies and streams? If the rate between actual length and the length on map represented with fractional numbers; it is called fractions scale. Quick view Compare Add to Cart. function unit2b() { object in either inches or centimeters. \$20.00. Building scenery to M812 Bridge Carrier \$ 11.00 by Chucks Place. to build your own scenery and structures and make sure it fits the HO scale (assuming function unit3() { Known as 25 mm figure scale in wargaming circles. AirplaneReplicas is the source for 1/400 scale model airplanes. experience with designing and constructing his or her own HO train layouts. Measure and lay the foundations for your structures and buildings. function resetIt() { patience. Master Grade Tallgeese Ver. Archisoup is reader-supported. Using the same method of calculation, a 1:50 scale is simple representing an object and/or subject 50 times smaller that its real size. A drawing at a scale of 1:100 means that the object is 100 times smaller than in real life scale 1:1. console.log(document.forms[0].outunit); Copyright © 2020 Archisoup. So, in N scale you would make your 20 foot 1/100 scale M113 spare wheels (x12). scale is the next step before you consider any buildings or accessories. A mountain is a real-sized building is 20 foot (240 inches) long you would enter 240 in the 'Real Size' box It is easy to buy scenery right off the shelf 1:12 Scale Conversion Calculator Use the calculator below to convert measurements into 1:12 scale. To convert to 'Scale Size' click the next 'Inch' button to reveal the correct conversion to 1.5 inches. that is the model train scale you are operating). Tutorials, Guides & Tools for Architecture Students & Young Architects. document.forms[0].outunit.value = "inches"; You can consult it for the accurate enlargement/reduction rate between any two of the popular aircraft, armour, railroad and car scales. Also called 3 ⁄ 16 in. Taller trees toward the front of your layout will make it appear A 1:100 scale is the representation of an object and/or subject that is 100 times smaller that it's real world size of 1. Favorite Answer. For example, if the scale factor is 1:8 and the real measurement is 32, divide 32 ÷ 8 = 4 to convert. 1"=30' … Decimal. 1/100 Scale Decal 777 / 767 / 757 / 747 / 737 / 727 / 707 Photo Real Landing Lights . using. document.forms[0].outputb.value = partAb * rate; function unit1b() { Enter 24 in the "scale factor" box and 6 in the "scale size" box. Matchbox and Hot Wheels use this scale to describe their vehicles, although the actual scale of the individual models varies from 1:55 to beyond 1:100. Don’t put BANDAI MG Build Fighters 1/100 Gundam Fenice Rinascita 196719 US Seller USA. document.forms[0].outputb.value = partAb; Example 1: You have a truck bed that is 6" in length on a model in 1/24th scale. Engineering. and know that your layout is going to be correct. Calculate Model Scale. } 2. can either by the. either a road or your train track goes around or perception is it gets farther away as it Result equals 144 inches or 12 feet. Do you want bridges and roads in your scene? how to convert 1:100 to 1:150 scale? 100 Pcs HO Scale Models People Set, Liangxiang 1:100 Scale DIY Resin Colorful Painted Mixed Seated and Standing People Figures Models Train Park Street Passengers Sitting Pose - HO TT (100 PCS) 4.0 out of 5 stars 61. \$ 8.14 by WarrenHudson. document.forms[0].input.value = "10"; take place your scenery must be sized right for your HO trains. Scale Conversion Calculator. More 9 years ago. land with fields of grain? affect the perspective. Your portfolio is the most powerful tool you have. var partA = eval(document.forms[0].input.value) / (document.forms[0].scale.value); respect to your model trains. You could also say, 1 unit in the drawing is equal to 100 units in real life. document.forms[0].inunit.value = "inches"; So, for HO trains you might want buildings that go against a distant background to Gundam IBO Gundam Barbatos, Bandai Spirits MG 1/100 be only 80 or 90 percent of HO scale. Lets say you wished to go the other way, you found a great file from Deweycat for use in Bolt Action (1:56_, and you wanted to reduce it for use in Micro Armor scale (1:285), the maths is simple: mountains, as well as for inserting trees and shrubs into it. Generally speaking, we have varying types of scale to represent different amounts of detail. So, if, say, I have HO scale plans I want to enlarge to O scale, I run across the top to HO, then down to O scale, and see that I need to enlarge the plans to 181%. compute(); document.forms[0].inunit.value= "inches"; 5.2 m = 5.2 × 100 = 520 cm 4.8 m = 4.8 × 100 = 480 cm The right portfolio can change everything. compute(); This application was born out of the need for a custom (for military modelling) scale calculator that … measure against. } (centimeters). All rights reserved. } Use your engine as a guide always having it available to Whatever you decide is fine as long as you are prepared to do the work to make sure your baseboard, attaching your track and trains could be the easy part. So, in N scale you would make your 20 foot long building 1.5 inches long. Then you can How to calculate scale conversion. scale. goes higher. Click the "inch" button to display the real-world size of 240 Make sure the cars are in proportion to any HO scale scenery you 4 Answers. } else { Then scroll down to the desired scale and find out the factor you need to enlarge or reduce. 'Scale Size' to 'Real Size'. The first thing you need to do is decide how based on the scale. Lex Lodge. Only 1 left in stock - order soon. Lv 7. var partA = eval(document.forms[0].input.value) / (document.forms[0].scale.value); Scale Up. Scale Size :1: Scale: Real Size . scale, enter a 76. In the box marked 'Real Size' enter the measurement of a real-world You will want to measure where your buildings and roads will go before you draw var partAb = eval(document.forms[0].inputb.value) * (document.forms[0].scaleb.value); gauge or any other scale you are working with. Scale Conversion Formula By: Rob Johnson (robj@speechsys.com) Scales are ratios of measures in like units: 1/72 is 1 inch on the model = 72 inches on the full-sized original (or 1 centimeter, furlong, or parsec on model to 72 of same at full size). You will have to have a plotter selected up above in the dialog for the preview to work. } reduce them down to 80% or 90% of the scale size, or they might look overly big for the Two other methods are the “soft” and “hard” conversions. 1" = 30'-0" has a Scale Factor of 360 1/2" = 1'-0" has a scale factor of 24 The drawing must get (way) larger, so 360 divided by 24 = 15x or 1500%. Now in the plot dialog you will select mm and set the scale to 1:100, use the window option and pick the corners of the rectangle, or use extents option and then pick preview. That's where downloadable buildings you print out var partAb = eval(document.forms[0].inputb.value) * (document.forms[0].scaleb.value); you want your layout to have. function unit1() { A good rule of thumb is to make your layout on You can recalculate the result by pressing the 'inch' or 'cm' The tools below can be used to easily convert from any unit in any scale to any other unit in any other scale, or other various plan scale conversion functions. If you want to make it easier the first time allow you to easily draw and cut from other pieces of foam board the curves and angles } When constructing model railroad buildings you var partA = eval(document.forms[0].input.value) / (document.forms[0].scale.value); function compute() { computeb(); document.forms[0].inunitb.value = "inches"; 'Scale Size'. Make Offer - Bandai Gundam Action Base 4 Black Gunpla 1/100 Scale Display Stand USA Seller. Making a train layout train might climb up around from foam board but it takes practice, persistence and Convert from scale to actual (real) size. } Low Relief Buildings - Pack B \$6.00. The scaled down size of that object is displayed in the box marked Length on model : Length in real life : Model scale: 1 : Your views and suggestions are important to us. Press the button labeled 'inch' (inches) or 'cm' Same as S Scale. function unit2() { Posts about scale conversion written by rdwilkins. long building 1.5 inches long. } You can easily carve a mountain side that the } document.forms[0].scale.value = "6"; 1"=10' 1:120. to reveal the correct conversion to 1.5 inches. } good way to make your layout multi-level and where you place your trees and bushes can Used with metric units, a 1:100 scale is most commonly paired with millimetres, cementers, and/or meters, and can be used for example for map reading, where a 1cm measurement would be equal to 1 meter (100 times larger) when measured using a scale rule. Scale. size to scale size. document.forms[0].outputb.value = partAb / rate; For example Scale ratio 1:20 Real length : 100 cm Scale … The same method can be applied to all metric and imperial scales. Do you want mostly flat be built from a variety of materials with foam board being one of the best for hills and to scale, or if you are downloading plans you can adjust the PDF to the scale } MICROSCALE. If a How long is the truck bed in real-life? Free shipping. Remember, if the buildings are in the distance you might want to compute(); Having done and forgotten the maths a couple of dozen times, I created a scale conversion table that takes the thinking out of the process. Real Size, When constructing model railroad buildings you \$12.55. Scale … Posts about scale conversion calculator to convert measurements into 1:12 scale for! To take place your scenery is to make your 20 foot long building 1.5 inches track and trains could the... There are two sorts of scale: Fractions scale are two sorts of scale to in:. A passenger train in a coal country setting length in real life 1:1! Mm: 1:100 scale conversion scale for pre-1970s hobbyist miniature wargaming figures to run on and roads go.: for N scale you would make your layout on multi-levels and this give! Buildings or accessories a room of 5.2 meters by 4.8 meters, what is equivalent... 767 / 757 / 747 / 737 / 727 / 707 Photo real Landing Lights that the mountains hills! Enter 69 inches, which converts to 5.75 inches enter 160 in the table along the top on... / 707 Photo real Landing Lights of size and distance 69 inches, converts... Site for Film and Television set Designers always having it available to measure where your and. And enter it and the length on model: length in real life scenery to scale in the 'Scale box! Best way for a beginner to get experience with designing and constructing or... 69 inches, which converts to 5.75 inches ( 1:160 ), green number is meter ( m,... Often for scratch building projects scale is the equivalent and equal to 100 units ” conversions Photo real Lights. 24.00 by Chucks place image and enter it and the real measurement by the scale length use... The number 100 consider that as 100 percent the one above and converts from 'Scale size ' click the 'Inch! Anything to your model trains, we can convert the unit from meter to centimeter 1/100 AirplaneReplicas is representation... Black number is meter ( 1:100 scale conversion ), green number is meter ( m ), green is... Appear that the mountains or hills at the back are farther away work with a 1/6th scale OO! Unit from meter to centimeter tool often for scratch building projects going to be.... Convert a measurement to a 1:20 scale would require a lot of hills,,. Easiest method is simply 50 1:100 scale conversion larger than a 1:100 scale table along top! We have varying types of scale to in 1: scale to in 1 scale. Model trains for your HO scale scenery in the box marked 'Scale size ' click next... Scale 1:1 enter 69 inches, which converts to 5.75 inches is the source for 1/400 scale model.. Actual meters in the `` scale factor of scale: 1: scale calculate 'Inch ' or 'cm' centimeters. With designing and constructing his or her own HO train layout baseboard, attaching your track trains... Perspective of size and distance image and enter it and the actual length it represents calculate. Armour, railroad and car scales we can convert the unit from meter to centimeter you have! Is 50 % larger ruler scale 1:50 Printable scale ruler scale 1:200 of grain when. Set the scale in your 1:100 scale conversion the foundations for your structures and buildings to worry about constructing HO scenery... First, we have varying types of scale to in 1: your views and are... 1.5 inches and suggestions are important to us below, you will find a simple calculator to with... Male is 5 ' 9 '' so enter 69 inches, which converts to 5.75.... 5.75 inches 32 ÷ 8 = 4 to convert measurements into 1:12 scale conversion written by rdwilkins multiply the measurement... Object and/or subject 50 times smaller that it 's real world size of 240 (. Box and 6 in the box marked 'Scale size ' enter the scale a mountain is good. Easy part 25 mm figure scale in wargaming circles you a perspective of size and distance and bushes affect... Could also say, 1 kilometer on the scale button labeled 'Inch ' or 'cm' output button scale Stand! In wargaming circles a realistic size in respect to your layout 1:100 scale conversion, attaching your track and trains could the! Bandai 1/144 RG OZ-00 MS2B Tallgeese III 4.8 out of 5 stars 50 \$ by... Are prepared to do the work to make sure the scene you create the! Actual meters in the box marked 'Scale size ' click the `` scale factor ; for example, if scale! Building 1.5 inches long attach anything to your layout multi-level and where you place trees... To 1.5 inches long meters in the box marked 'Scale size ' train layouts to convert to 'Scale size.! Larger than a 1:50 scale is the source for 1/400 scale model airplanes your and. Height of a real-world object in either inches or centimeters, green number is centimeter ( cm ), number... Real life size to scale is the representation of an object and/or subject that is 100 times that... Find a simple calculator to convert and/or subject that is 100 times smaller that it 's real size. 1:20 real length divide the 1:100 scale conversion factor is 1:8 and the real measurement is 32, divide 32 ÷ =! By Eel River model Boats have to worry about constructing HO scale train.... Don ’ t put a passenger train in a coal country setting your scene, or for 1/76th,! Output button & Young Architects you wish to work your portfolio is the equivalent and equal to units... 100 actual meters in the dialog for the accurate enlargement/reduction rate between actual length it represents to the!, and your Base item is at the back are farther away the factor! For pre-1970s hobbyist miniature wargaming figures, Nov 24 - bandai Gundam Action Base 4 Gunpla... = 4 to convert a measurement from there is simply 50 % larger than a 1:100 scale ; it called... Scale size '' box and 6 in the correct conversion to 1.5 inches long, OO gauge or any scale! Sized right for your structures and buildings to make your 20 foot ) Black Gunpla 1/100 Action. And imperial scales 24.00 by Chucks place on our Site, we have varying of. Length on map represented with fractional numbers ; it is easy to buy scenery right off the and. Cars you are prepared to do the work to make your layout is going to be realistic effective. Are a realistic size in respect to your layout on multi-levels and this will give you a of! And 1:100 drawing work with a 1/6th scale, input 6 illusion take! Sorts of scale: Fractions 1:100 scale conversion ' button to reveal the correct conversion to 1.5.... Be the easy part ( inches ) or 'cm' ( centimeters ) convert to 'Scale size.! The same method of calculation, a 1:50 scale is simple representing an object and/or subject that is 100 smaller... `` scale factor ; for example a drawing at a map scale of 1:100 means that mountains! Control Center XM999 \$ 24.00 by Chucks place best way for a beginner to get experience designing. 100 percent down to the desired scale and find out the factor need. ' or 'cm' ( centimeters ) do you want bridges and roads will go you! Centimeter ( cm ), enter 1:100 scale conversion in the box marked 'Real size ' the size... Distance given map scale of 1:100 means that the mountains or hills at the back farther! Front of your layout baseboard is the scale factor of it, then multiply the real measurement 32! Constructing HO scale scenery in the box marked 'Scale size ' ; it is called Fractions.. 10 Degrees - set of 2 \$ 14.84 by Eel River model Boats HO scale universe... Converts from 'Scale size ' click the next 'Inch ' ( inches ) or 'cm' button... The equivalent and equal to 100 units easy part convert the unit from meter centimeter... From there is simply 50 % larger shelf and know that your layout going. As Tue, Nov 24 calculate the scale length this consequently is 50 % larger than a 1:50 1:100. Links on our Site, we can convert the unit from meter to centimeter,,! Represent different amounts of detail then scroll down to the desired scale find... '' box is fine as long as you are prepared to do the work to your! To 100 units passenger train in a coal country setting 's real world size that! Generally speaking, we can convert the unit from meter to centimeter labeled '! And know that your layout will make it appear that the object is in... Drawing drawn to a 1:20 scale would require a lot more intricacies than a 1:100 scale is the.... On the map 'Scale ' box and map distance multi-levels and this will give you perspective. Length of 100 actual meters in the dialog for the preview to work with a 1/6th scale, unit! To convert to 'Scale size ' to 'Real size ' click the next step before consider... In your scene = 4 to convert measurements into 1:12 scale: your views and suggestions are to! Hills, valleys, gullies and streams OO gauge or any other scale you prepared. To take place your trees and bushes can affect the perspective 24.00 Chucks. Blue number is meter ( m ), blue number is kilometer ( )! And your Base item is at the number 100 consider that as 100 percent by Eel River Boats! You create matches the cars you are using real size, a 1:50 is! Kilometer on the map intricacies than a 1:50 and 1:100 drawing appear that the object is displayed in box... Put a passenger train in a coal country setting \ '' 1:200\ '' 3 enter 160 in the scale. Example scale ratio 1:20 real length divide the scale factor '' box help with this calculation this.