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21 Appendix A: Architectural Scale

1" = 1' Fraction of inch equaling 1 foot 12 x 1/1 = 12 Inches/ foot multiplied by inverted fraction 1 : 12 Number to be typed into Paper Scale
1/2" = 1' 12 x 2/1 = 24 1 : 24
1/4" = 1' 12 x 4/1 = 48 1 : 48
3/4"= 1' 12 x 4/3 = 16 1 : 16
1/8" = 1' 12 x 8/1 = 96 1 : 96
3/8" = 1' 12 x 8/3 = 32 1 : 32
5/8" = 1' 12 x 8/5 = 19.2 1 : 19.2
7/8" = 1' 12 x 8/7 =13.714... 1 : 13.7142857
1/16" = 1' 12 x 16/1 = 192 1 : 192
3/16" = 1' 12 x 16/3 = 64 1 : 64
5/16" = 1' 12 x 16/5 = 38.4 1 : 38.4
7/16" = 1' 12 x 16/7 = 27.428... 1 : 27.4285714
9/16" = 1' 12 x 16/9 = 21.333... 1 : 21.3333333
11/16" = 1' 12 x 16/11 = 17.454... 1 : 17.4545454
13/16" = 1' 12 x 16/13 = 14.769... 1 : 14.7692307
15/16" = 1' 12 x 16/15 = 12.8 1 : 12.8
1/32" = 1' 12 x 32/1 = 384 1 : 384
3/32" = 1' 12 x 32/3 = 128 1 : 128
5/32" = 1' 12 x 32/5 = 76.8 1 : 76.8
7/32" = 1' 12 x 32/7 = 54.857 1 :54.8571428
1/64" = 1' 12 x 64/1 = 768 1 : 768
3/64" = 1' 12 x 64/3 = 256 1 : 256




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