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TM 9-254
5-5.
Temperature Scales - Continued
d.
Rankine. Rankine is a temperature scale on which the degree intervals are equal to those of the Fahrenheit
scale. On the Rankine temperature scale the freezing point of water is 491.69°R and the boiling point is 671.69°R.
5-6.
Temperature Conversion.
a.
Familiar temperatures and their equivalent values are listed in table 5-6.
Table 5-6. Temperature Conversion
Centigrade
Familiar temperature
or Celsius
Fahrenheit
Kelvin
Rankine
C
F
K
R
Boiling point of water
100
212
373.16
671.7
95
203
368.16
662.7
90
194
363.16
653.7
85
185
358.16
644.7
78.9
174
352.06
633.7
Boiling point of alcohol
75
167
348.16
626.7
70
158
343.16
617.7
65
149
338.16
608.7
60
140
333.16
599.7
55
131
328.16
590.7
Melting point of tallow
52.8
127
325.96
586.7
50
122
323.16
581.7
45
113
318.16
572.7
42.2
108
315.36
567.7
40
104
313.16
563.7
Body temperature
36.7
98
309.86
557.7
35
95
308.16
554.7
32.2
90
305.36
549.7
30
86
303.16
545.7
26.7
80
299.86
539.7
25
77
298.16
539.7
20
68
293.16
527.7
15.5
60
288.66
519.7
12.8
55
285.96
514.7
10
50
283.16
509.7
7.2
45
280.36
504.7
5
41
278.16
500.7
1.7
35
274.86
494.7
Freezing point of water
0
32
273.16
491.7
-1.1
30
272.06
489.7
-5
23
268.16
482.7
5-15
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