used but all bits present and correct
original box and paperwork
diffusers and rods all perfect
few marks from use but works perfectly
Velocity can be measured from 30fps feet per second to 7000fps and with better than 99.5 accuracy.
Your Chrony can go with you anywhere. Just unfold, mount on a tripod or place on a table, insert diffusers if needed and shoot.
The Alpha Chrony
Gives numbered shot velocities, and velocity stays on display until you shoot again.
Uses 9volt alkaline battery with 48 hours of continuous use.
You can flip between fps feet per second and mps metres per second with the flick of a switch.
Delivers measurements and statistics such as High, Low and Average velocities, Extreme Spread and Standard Deviation.
You can retrieve individual shot velocities and statistics.
Has 32 shot memory.
You can delete individual shots, with automatic adjustment of statistics.
Built-in option of larger shooting area
Folded Dimensions 19cm x 10.3cm x 7cm
CHRONY ALPHA  - 114.95 : Air Rifles & Accessories, - Buy online at cheap rates from Drapers Air Guns
yours for £60 posted