Sold Calumet Shutter Speed Tester Tested and Working

SOLD! Previously sold but It did not get paid for
Long out of production and never made in large numbers, this is one of the most useful things a Large Format photographer can have. It uses a 9 volt battery and measures the duration that light hits an LED on top. Set your lens on top, set a light source over the lens, and trip the shutter. It gives you the time in decimal out to 5 places. For instance .28062 would be 1/4 second at 1/6th stop slow. You can make cheat sheats for all of your lenses and know exactly what they're doing. $85 includes shipping in USA

Thanks for the donation

Think I saw a Calumet shutter speed tester on Ebay but went out of price range. I have one of the german led plus your cell phone shutter testers but really hard to hold your tongue right to operate both the cell phone and lens right to the light to get a good reading.