Park Tool DCA-1 Digital Caliper Accessory

• Installs onto most digital, dial, or vernier calipers to check disc brake rotors for wear
• Features protruding contact points that allow measurement of the center of the braking surface, bypassing the unworn edge to ensure an accurate measurement
• Conical end points of the DCA-1 can be used to measure center-to-center distances of bolt holes for calculating bolt circle diameter (BCD) of chainrings and cranks
• Compatible with most standard vernier, dial, and digital caliper designs