Measures frame centerface to crankface distance at 42 mm 2 mm for precise track bike setup
One-touch operation allows fast and easy chainline confirmation
SUS304 stainless steel with added honed finish prevents frame damage and ensures durability
Wide groove design accommodates various crank and crankset types
90° to 108° adjustable mouth fits different body types and handlebar heights
According to the inspection standard for KEIRIN, the distance between the center plane of the frame and the center plane of the large gear is 42mm±2mm. Check the chainline with one touch to ensure the best performance and safety. It`s been well received by busy inspectors at keirin inspection centers.
GAUGE42S is a gauge that checks the