This thing really works - Competition Electronics Indoor Light

I bought this Pro-Chronograph attachment because recent over-cast weather in my area left my chronograph as a useless paper weight.

I recently purchased an un-suppressed PCP air rifle that would be too loud to shoot in my back yard in order to collect velocity data. This chronograph attachment allows me to get my velocity readings indoors and avoid having the cops called on me for shooting in my backyard.

Wouldn't you know it? No sooner did this item arrive than our weather cleared up so that now my Pro-Chrono functions outdoors like it's supposed to function. This is still an excellent attachment to fall back on if overcast skies keeps your Chronograph from working properly.