This section is from the "Encyclopedia Of Practical Receipts And Processes" book, by William B. Dick. Also available from Amazon: Dick's encyclopedia of practical receipts and processes.
55. Table to find the true percentage of Absolute Alcohol by volume in a liquid at 60° from the observed percentage indicated by a Glass Hydrometer at any other temperature.
60° 0 | 30° | 35° | 40° | 45° | 50° | 550 | 65° | 70° | 75° | 80° | 85° | 60° |
—0.2 | —0.4 | —0.4 | —0.5 | —0.4 | —0.2 | +0.2 | +0.6 | +1.0 | +1.4 | +1.9 | 0 | |
5 | +4.6 | +4.5 | +4.5 | +4.5 | +4.6 | +4.8 | 5.3 | 5.8 | 6.2 | 6.7 | 7.3 | 5 |
10 | 9.1 | 9.0 | 9.1 | 9.2 | 9.3 | 9.7 | 10.4 | 11.0 | 11.6 | 12.3 | 13.0 | 10 |
15 | 13.0 | 13.1 | 13.3 | 13.5 | 13.9 | 14.5 | 15.6 | 16.3 | 17.1 | 18.0 | 19.0 | 15 |
20 | 16.5 | 16.9 | 17.4 | 17.8 | 18.5 | 19.2 | 20.8 | 21.8 | 22.8 | 23.8 | 24.9 | 20 |
25 | 19.9 | 20.6 | 21.4 | 22.2 | 23.0 | 24.1 | 25.9 | 27.0 | 28.2 | 29.4 | 30.5 | 25 |
30 | 23.5 | 24.5 | 25.7 | 26.6 | 27.7 | 28.8 | 31.1 | 32.2 | 33.4 | 34.5 | 35.7 | 30 |
35 | 28.0 | 29.2 | 30.4 | 31.6 | 32.7 | 33.8 | 36.2 | 37.3 | 38.4 | 39.5 | 40.6 | 35 |
40 | 33.0 | 34.2 | 35.4 | 36.7 | 37.8 | 39.0 | 41.1 | 42.2 | 43.3 | 44.3 | 45.4 | 40 |
45 | 38.4 | 39.6 | 40.7 | 41.8 | 42.9 | 43.9 | 46.1 | 47.1 | 48.2 | 49.2 | 50.3 | 45 |
50 | 43.7 | 44.7 | 45.8 | 46.9 | 47.9 | 49.0 | 51.0 | 52.0 | 53.0 | 54.0 | 55.1 | 50 |
55 | 49.0 | 50.0 | 51.0 | 52.0 | 53.0 | 54.0 | 54.9 | 56.9 | 57.9 | 58.9 | 59.9 | 55 |
60 | 54.2 | 55.2 | 56.2 | 57.1 | 58.1 | 59.0 | 60.9 | 61.9 | 62.9 | 63.8 | 64.9 | 60 |
65 | 59.4 | 60.3 | 61.2 | 62.2 | 63.1 | 64.0 | 65.9 | 66.8 | 67.7 | 68.6 | 69.6 | 65 |
70 | 64.6 | 65.5 | 66.4 | 67.3 | 68.2 | 69.1 | 70.8 | 71.7 | 72.6 | 73.5 | 74.5 | 70 |
75 | 69.8 | 70.7 | 71.5 | 72.4 | 73.3 | 74.2 | 75.8 | 76.7 | 77.6 | 78.4 | 79.3 | 75 |
80 | 75.0 | 75.8 | 76.6 | 77.5 | 78.4 | 79.2 | 80.8 | 81.7 | 82.4 | 83.2 | 84.1 | 80 |
85 | 80.3 | 81.1 | 81.8 | 82.6 | 83.5 | 84.3 | 85.7 | 86.5 | 87.3 | 88.0 | 88.8 | 85 |
90 | 85.6 | 86.4 | 87.1 | 87.9 | 88.6 | 89.3 | 90.7 | 91.4 | 92.0 | 92.7 | 93.4 | 90 |
The following table gives the richness or the per cent, of alcohol by volume, in reference to the volume of the liquid at the temperature when tested; it therefore requires ' that the liquor should be tested exactly at the same temperature at which it was measured.
 
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