Cadett & Neal sensitometer
Cut by Hilger for Cadett & Neal. Hurter and Driffield pattern, nine steps with angular values 1.25º - 320º. 387mm, blackened brass.
- Object Number:
- 1990-5036/7901/A
- type:
- sensitometer
Improved Capstaff-Purdy type. Lever operated microswitch for lamp, No 181.
Cut by Hilger for Cadett & Neal. Hurter and Driffield pattern, nine steps with angular values 1.25º - 320º. 387mm, blackened brass.