The Magneto Speed chronograph attaches directly to the barrel of your gun, so there’s no need for tripods, long wires, and bulky readout boxes. The sensor unit houses two electromagnetic sensors that detect the presence of the bullet, then relays the information to the small display unit. Shot information displayed includes minimum and maximum velocity, average velocity, standard deviation, extreme spread, shot number, and string number. Nonvolatile memory preserves your data from previous sessions. The shooter can delete individual shots or entire strings if desired. Rugged sensor unit has been carefully engineered to stand up to extreme muzzle blast and recoil and still deliver accurate and consistent readings. Can be used on rifles, pistols, and shotguns. V1 kit fits barrels from ½" up to 1" O.D., with clearance for a muzzle brake up to 2½" O.D. V2 kit fits barrels from ½" up to 2" O.D. to accommodate extra-large bull barrels, with clearance for a muzzle brake up to 3" O.D. The V2 also has a spacer/shim system that allows fine positioning of the sensor unit as close as safely possible to the bullet edge to help ensure maximum accuracy of readings. V2 only comes in a hard plastic case.
Mini-Catalogs, Issue:03, Page:010
Sinclair, Issue:3B, Page:007