Competitive Edge Dynamics: Offers electronic timers and sales marketed by this firm.
EWS Enterprises: Features the Speed Timer line as well as accessory displays for shooting competitions.
Oehler Research, Inc.: Features ballistic chronographs, sky screens, and software made by this firm.
R. U. Ready: Offers the Speed Timer line as well as accessories like large display screens.
Shooting Chrony Inc.: Features the chronographs made by this firm that measure the speed of projectiles from 30 to 7000 feet per second.