Sand timer
- Made:
- 1920-1960
Sand timer, 30 seconds, for use with clinical thermometers or for taking pulse, 1920-1960
Details
- Category:
- Clinical Diagnosis
- Object Number:
- 1982-185/40
- Measurements:
-
overall: 90 mm 11 mm, .013 kg
- type:
- timers
- credit:
- G H Zeal Limited