Easy to use shutter speed tester for film cameras, able to measure shutter speeds up 1/2000 sec.

   It has 3 sensors for measuring frame exposure unevenness. Sensors are located diagonally across the frame, so you can use it for vertical and horizontal shutter movement systems. 

   This tester need bright light source (not included) to be able to take measurements. You can use a flashlight or your phone camera flash as a light source. 

   Device has OLED screen of 0.96", only one button and simple screen menu, so it's straightforward and easy to use.  

   It's USB powered (Type-C), so you can use your phone/tablet power adapter, power bank or your PC to power the device.  Power specs: DC 5.1v, 20ma. 

   This device is designed and made by me, case is printed on a 3D printer with PLA plastic. Every device is tested after production.