APEXI G Sensor For Rev Speed Meter RSM-GP (430-A013)Product Name G Sensor For Rev Speed Meter (RSM GP) Code No. 430 A013 Product Description An added feature to the Rev Speed Meter GP, the G Sensor unit allows the unit to measure G forces in 4 way front rear left right directions. This data can be plotted in a graph display to map acceleration characteristics and lateral G's on the race track, or used in an array of new features including: highly accurate 100m 200m 400m times with trap speed and wheel