Imperial Cad Scales
This is for my own use as much as anything. But figured I would share them for all to reference. When I’m doing architectural designs I have to refer to these often. Maybe they will help you as well.
|
Architectural |
||
|
Scale |
Factor |
Decimal |
|
1’=1′-0″ |
1:1 |
1.0 |
|
6″=1′-0″ |
1:6 |
0.5 |
|
1-1/2″=1′-0″ |
1:8 |
0.125 |
|
1″=1′-0″ |
1:12 |
0.08333 |
|
3/4″=1′-0″ |
1:16 |
0.06250 |
|
1/2″=1′-0″ |
1:24 |
0.41667 |
|
3/8″=1′-0″ |
1:32 |
0.031250 |
|
1/4″=1′-0″ |
1:48 |
0.020833 |
|
3/16″=1′-0″ |
1:64 |
0.015625 |
|
1/8″=1′-0″ |
1:96 |
0.010417 |
|
3/32″=1′-0″ |
1:128 |
0.007813 |
|
1/16″=1′-0″ |
1:192 |
0.005208 |
|
1/32″=1′-0″ |
1:384 |
0.002604 |
|
1/64″=1′-0″ |
1:768 |
0.001302 |
|
1/128″=1′-0″ |
1:1536 |
0.000651 |
|
Engineering |
||
|
Scale |
Factor |
Decimal |
|
1″=10′ |
1:120 |
0.008333 |
|
1″=20′ |
1:240 |
0.004167 |
|
1″=30′ |
1:360 |
0.002778 |
|
1″=40′ |
1:480 |
0.002083 |
|
1″=50′ |
1:600 |
0.001667 |
|
1″=60′ |
1:720 |
0.001389 |
|
1″=70′ |
1:840 |
0.001190 |
|
1″=80′ |
1:960 |
0.001042 |
|
1″=90′ |
1:1080 |
0.000926 |
|
1″=100′ |
1:1200 |
0.000833 |
|
1″=150′ |
1:1800 |
0.000555 |
|
1″=200′ |
1:2400 |
0.000416 |
|
1″=300′ |
1:3600 |
0.000277 |
|
1″=400′ |
1:4800 |
0.000208 |
|
1″=500′ |
1:6000 |
0.000166 |
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