Fig. 314.

MARINERS’ COMPASS.

Useful Tables for Draughtsmen.

TABLE OF DECIMAL EQUIVALENTS.
8ths, 16ths, 32ds and 64ths of an Inch.

8ths.
1⁄8=.125
1⁄4=.250
3⁄8=.375
1⁄2=.500
5⁄8=.625
3⁄4=.750
7⁄8=.875
16ths.
1⁄16=.0625
3⁄16=.1875
5⁄16=.3125
7⁄16=.4375
9⁄16=.5625
11⁄16=.6875
13⁄16=.8125
15⁄16=.9375
32nds.
1⁄32=.03125
3⁄32=.09375
5⁄32=.15625
7⁄32=.21875
9⁄32=.28125
11⁄32=.34375
13⁄32=.40625
15⁄32=.46875
17⁄32=.53125
19⁄32=.59375
21⁄32=.65625
23⁄32=.71875
25⁄32=.78125
27⁄32=.84375
29⁄32=.90625
31⁄32=.96875
64ths.
1⁄64=.015625
3⁄64=.046875
5⁄64=.078125
7⁄64=.109375
9⁄64=.140625
11⁄64=.171875
13⁄64=.203125
15⁄64=.234375
17⁄64=.265625
19⁄64=.296875
21⁄64=.328125
23⁄64=.359375
25⁄64=.390625
27⁄64=.421875
29⁄64=.453125
31⁄64=.484375
33⁄64=.515625
35⁄64=.546875
37⁄64=.578125
39⁄64=.609375
41⁄64=.640625
43⁄64=.671875
45⁄64=.703125
47⁄64=.734375
49⁄64=.765625
51⁄64=.796875
53⁄64=.828125
55⁄64=.859375
57⁄64=.890625
59⁄64=.921875
61⁄64=.953125
63⁄64=.984375

TABLE OF DECIMAL EQUIVALENTS
Of Millimeters and Fractions of Millimeters.

mm. Inches.
1⁄50=.00079
2⁄50=.00157
3⁄50=.00236
4⁄50=.00315
5⁄50=.00394
6⁄50=.00472
7⁄50=.00551
8⁄50=.00630
9⁄50=.00709
10⁄50=.00787
11⁄50=.00866
12⁄50=.00945
13⁄50=.01024
14⁄50=.01102
15⁄50=.01181
16⁄50=.01260
17⁄50=.01339
18⁄50=.01417
19⁄50=.01496
20⁄50=.01575
21⁄50=.01654
22⁄50=.01732
23⁄50=.01811
24⁄50=.01890
25⁄50=.01969
26⁄50=.02047
27⁄50=.02126
28⁄50=.02205
29⁄50=.02283
30⁄50=.02362
31⁄50=.02441
32⁄50=.02520
33⁄50=.02598
34⁄50=.02677
35⁄50=.02756
36⁄50=.02835
37⁄50=.02913
38⁄50=.02992
39⁄50=.03071
40⁄50=.03150
41⁄50=.03228
42⁄50=.03307
43⁄50=.03386
44⁄50=.03465
45⁄50=.03543
46⁄50=.03622
47⁄50=.03701
48⁄50=.03780
49⁄50=.03858
1=.03937
2=.07874
3=.11811
4=.15748
5=.19685
6=.23622
7=.27559
8=.31496
9=.35433
10=.39370
11=.43307
12=.47244
13=.51181
14=.55118
15=.59055
16=.62992
17=.66929
18=.70866
19=.74803
20=.78740
21=.82677
22=.86614
23=.90551
24=.94488
25=.98425
26=1.02362