AIR CHRONY Shooting Chronograph MK3 - Set (Chronograph, Durable case, Power supply, USBCable, Soft.) - Durable build - Official measuring device of the World Hunter Field Target Org.

Absolute pile of junk, never ever has given a true reading in any light indoors or out having been forced to use them last 8 years nationally. This one is no different, at best with additional light source still reads 20 ft/sec slow indoors, outdoors anything from 75 ft/sec slow to reading a ficticious 54 ft/sec fast depending what the lightings like.Data cable just wont have it on WIN10 or 7 £200 wasted.Now gone back to the LMBR, FX radar and old CED M2 IR

It's a pile of Junk, I get wildly different velocities/fpe's from this display. I've tried it with UMAREX HDS 68 cal. Shotgun, UMAREX HDR 50 CAL pistol and a Sig Sauer P320 .177 cal pistol. it gives wildly differet readings from under 1fpe to hundreds of fpe for each of these weaponss. I bought it after research based on reviews. I will never rely on that again. What an appalling pile of JUNK. Really angry I wanted it to check power of my Home defense Weapons. Total waste of North of £200.