![Metal recording discs from a clockwork motor and shutter assembly from Dobson Spectrophotometer](https://coimages.sciencemuseumgroup.org.uk/365/333/large_smg00178536.jpg)
Metal recording discs from a clockwork motor and shutter assembly from Dobson Spectrophotometer
Three metal recording discs from a clockwork motor and shutter assembly from Dobson Spectrophotometer, no.7, c.1930's. Made by R & J Beck Ltd and used by the Meteorological Office.
- Measurements:
-
overall: 1 mm 160 mm,
- Materials:
- metal (unknown)
- Object Number:
- 1992-693 Pt1
- type:
- instrument component and spectrophotometer
- Image ©
- The Board of Trustees of the Science Museum