Methods for testing unknown shutters?

[Joseph Kashi]

Why not just get a used Calumet shutter speed tester off the bay? Reliable, simple, not very expensive, and no fuss.

[lassethomas]

Why not just get a used Calumet shutter speed tester off the bay? Reliable, simple, not very expensive, and no fuss.

A quick search for ”Calumet shutter speed tester” gave no results. Maybe all of the above but not available