This section is from the book "The Tinman's Manual And Builder's And Mechanic's Handbook", by Isaac Ridler Butt. Also available from Amazon: The Tinman's Manual And Builder's And Mechanic's Handbook.
[The Inch, or Gallon, being divided into 32 parts.]
[In multiplying decimals it is usual to drop all but the two or three first figures.]
Decimals. | Gallon. or Inch. | Gills. | Pints. | Quarts. |
.03125 | 1-32 | 1 | ¼ | 1/8 |
.0625 | 1-16 | 2 | ½ | ¼ |
.09375 | 3-32 | 3 | ¾ | 3/8 |
.125 | 1-8 | 4 | 1 | ½. |
.15625 | 5-32 | 5 | 1 ¼ | 5/8 |
.1875 | 3-16 | 6 | 1½ | ¾ |
.21875 | 7-32 | 7 | 1 ¾ | 7/8 |
.25 | 1- | 8 | 2 | 1 |
.28125 | 9-2 | 9 | 2 ¼ | 1 1/8 |
.3125 | 5-16 | 10 | 2.½ | 1 ¼ |
l1-2 | 11 | 2¾ | 1 3/8 |
Decimals. | Gallon. or Inch. | Gills. | Pints. | Quarts. |
.375 | 3-8 | 12 | 3 | 1½ |
.40625 | 1-32 | 1 | 3 ¼ | 1 5/8 |
.4375 | 7-16 | 14 | 3 ½ | 1 ¾ |
.46875 | 15-32 | 15 | 3¾ | 1 7/8 |
.5 | 1-2 | 16 | 4 | 2 |
.53125 | 17-32 | 17 | 4 ¼ | 2 1/8 |
.5625 | 9-16 | 18 | 4½ | 2¼ |
.59375 | 19-32 | 19 | 4¾ | 2 3/8 |
.625 | 5-8 | 20 | 5 | 2½ |
.65625 | 21-82 | 21 | 5¼ | 2 5/8 |
.6875 | ll-16 | 22 | 5½ | 2¾ |
Decimals. | Gallon. or Inch. | Gills. | Pints. | Quarts. |
.71875 | 23-32 | 23 | 5¾ | 2 7/8 |
.75 | 3-4 | 21 | 6 | 3 |
.78125 | 25-32 | 25 | 6¼ | 3 1/8 |
.8125 | 13-16 | 26 | 6½ | 3¼ |
.84375 | 27-32 | 27 | 6¾ | 3 3/8 |
.875 | 7-8 | 28 | 7 | 3½ |
.90625 | 29-32 | 29 | 7¼ | 3 5/8 |
.9375 | 15-16 | 30 | 7½ | 3¾ |
.96875 | 31-32 | 3 | 7¾ | 3 7/8 |
1.000 | 1 | 32 | 8 | 4 |
APPLICATION. Required the gallons in any Cylindrical Vessel. Suppose a vessel 9 1-- inches deep, 9 inches diameter, and contents 2.6163, that is 2 gallons and 61 hundredth parts of a gallon, now to ascertain this decimal of a gallon refer to the above Table, for the decimal that is nearest, .625, opposite to which is 6-8th of a gallon, or 20 gills, or 5 pints, or 2 1-2 quarts, consequently the vessel contains 2 gallons and 5 pints.
INCHES To find what part of an inch the decimal 708 is. Refer the above Table for the decimal that is nearest, which is .71875, opposite to which is 23-32, or nearly 3-4ths of an inch.
 
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