Watkins Bee Meter
Watkins Bee meter. Actinometer, watch form.
- Object Number:
- 1990-5036/273/1
- type:
- actinometer
Watkins Bee meter. Actinometer, watch form. In original carton with short instructions, booklets and speed card.
Watkins Bee meter. Actinometer, watch form.
Instruction book for Watkins Bee meter.
Speed card for Watkins Bee meter.
Carton for a Watkins Bee meter.