Thermocouple calculator with centigrade to Fahreheit converter by Leeds Northrup
- Made:
- 1952-1960 in Philadelphia
Thermocouple calculator with centigrade to Fahreheit converter by Leeds Northrup, 1952-60.
Details
- Category:
- Mathematics
- Object Number:
- 1999-711
- Measurements:
-
overall: 2 x 240 x 102 mm
- credit:
- Mr G. J. Betts