Tel ya what, Ive shot thru a chrony since God was a Corporal. You want a good unit, get an Oehler 35 pay yer $ or use a $100 cheap chit and believe what you want. Simple as that.
Go to Oehler.com pay up or use junk and swear your stuff shoots rockets. I dont care, Dont waste my time shooting arrows thru a chronograph.
Shawn~