ID:
2178
Maker's Name:
unknown
Dimensions:
14.5 × 3.3 × 1 cm
Mercury in glass thermometer specially made to be fitted into an instrument, probably a Wheatstone Bridge or other test instrument where the temperature dependence of the standard resistances need to be taken into account.
It ranges around typical operating temperatures 10-25C, with fine 1/10 C graduations.
