Standard temperature 60°F, subdivisions 0.1° API, length 380mm, thermometer scale °F 0-150 (designation L) 30 to 180 (designation M), 60 to 220 (designation H)
Catalog No.
ASTM Thermohydrometer No.
Nominal API Gravity Range, deg
G-142-251-000-51HH
51HH
-1 to 11
G-142-251-000-51HL
51HL
G-142-251-000-52HH
52HH
9 to 21
G-142-251-000-52HL
52HL
G-142-251-000-53HM
53HM
19 to 31
G-142-251-000-53HL
53HL
G-142-251-000-54HM
54HM
29 to 41
G-142-251-000-54HL
54HL
G-142-251-000-55HL
55HL
39 to 51
G-142-251-000-56HL
56HL
49 to 61
G-142-251-000-57HL
57HL
59 to 71
G-142-251-000-58HL
58HL
69 to 81
G-142-251-000-59HL
59HL
79 to 91
G-142-251-000-60HL
60HL
89 to 101