Screen for Wynne’s Infallible Shutter Speed Tester
Gradated screen for shutter tester by Wynne, patented 1903.
- Object Number:
- 1947-44/1
- type:
- screen
Shutter Tester by Wynne, patented 1903.
Gradated screen for shutter tester by Wynne, patented 1903.
Metronome for Wynne’s Infallible Shutter Speed Tester.