What is measured is improved! This simple to use timer with Cartessa AGC4P, AGC-4, AGC-5 as well as Pro Gate Jr and CK-0716 controls. Have a different control? Call and ask. All four timers start with the gate signal, and stop with a 12ft long run over strip placed 30-45' after the gate. Times riders in lanes 1-4, or 5-8 depending on what side of the hill it is placed. Comes with a heavy duty tripod to mount all four times. Images coming soon.