Caldwell Ballistic Precision Chronograph

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It worked well, except the current Android version is not supported by the app, so I couldn't see the results from the mobile phone.

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A well-functioning device for measuring rifle and shotgun (and other) velocities. A 9 V battery and an old video camera tripod or some table under it and shoot. I got the apps to work on Android when I defined Mikki / headphone connection as allowed and some other settings had to be changed, but now it works. The device came with a pocket for a mobile phone, sunshades, user manual and a protective bag, the battery 9 V was not included. I have test shot 22 Lr, with air pistol, shotgun, 308 Win and other weapons have been tested by the guys. Works. Data can be recovered easily with apps. I can recommend it for myself.

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If you don't feel like doing it, you should read the instruction manual

5+