Sand timer
- Made:
- 1920-1960
This image is released under a CC BY-NC-SA 4.0
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Science Museum Group
© The Board of Trustees of the Science Museum
Sand timer, 30 seconds, for use with clinical thermometers or for taking pulse, 1920-1960
Details
- Category:
- Clinical Diagnosis
- Object Number:
- 1982-185/41
- Measurements:
-
overall: 68 mm 10 mm, .02 kg
- type:
- timers
- credit:
- G H Zeal Limited
