- Latest available (Revised)
- Original (As enacted)
This is the original version (as it was originally enacted).
Type | Mercury in glass, nitrogen filled, graduated on the stem, enamel back. |
Length | Approximately 9 inches. |
Stem | Diameter, 0.24 inches to 0-28 inches. |
Bulb | Cylindrical: made of a normal glass approved by the Board of Trade. Length approximately 0.8 inches. Diameter not to exceed the diameter of the stem. |
Range | 90 degrees Fahrenheit to 190 degrees Fahrenheit with expansion chamber. Distance from the bottom of the bulb to the 90 degree line 3.95 inches to 4.35 inches. Distance from the 90 degree line to the 190 degree line not less than 3-55 inches. |
Immersion | A swelling is made in the stem to ensure that the thermometer shall be fixed in its brass collar so that the distance from the top of the collar to the bottom of the bulb is 3.5 inches + 0-1 inches. |
Graduation | Scale graduated in 1 degree Fahrenheit divisions. Every fifth degree and tenth degree to be indicated by longer lines. Figured at every tenth degree in full. |
Marking | " Abel Water Bath " : Identification number : " Fahrenheit " : Maker's or Vendor's name or trade mark. |
The brass collar of the thermometer is in each case of the following dimensions :—
Note.—A model apparatus is deposited at the Standards Department of the Board of Trade. | |
Outside diameter | push fit in socket. |
Thickness of tube | 22 I.W.G. |
Thickness of flange | 0.1 inches. + 0.001 inches. |
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