Shutter tester–7FR-80D | TSUBOSAKA ELECTRIC CO., LTD.
Shutter Tester - FlynnGraphics
ALVANDI Shutter Speed Tester
Some test shots/behind the scenes of a Rolleiflex 3.5C I just overhauled. On the first image is the original Rollei shutter tester which was used to calibrate the very shutter that took