PARK TOOL

The DCA-1 installs onto most digital, dial, or vernier calipers and features protruding contact points that allow measurement of the center of the braking surface rather than the unworn edge of the rotor for a more accurate measurementThe 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 cranksCaliper AccessoryClearDCA-1

 Displays metric, decimal standard, and fractional standard to 1/128� Large LCD display Measures external, internal, depth and stepped dimensions Resolution: +/- 0.01mm/0.0005�/1/128� Accuracy: +/- 0.02mm/0.001 (-100mm) Repeatability: +/- 0.01mm/0.0005� Protective case and battery included Digital Caliper DC-1

 A versatile digital scale built to accurately weigh bikes, frames, and components Uniquely designed to be clamped solidly into a repair stand or hung from a hook or branch Measures in both pounds and kilograms to the tenth and includes a dual position, silicone coated hanging hook Scale DS-1

 Accurate to within 2g/ 1000g, 2g/ 2000g, 3g/ 3000g Tare feature to exclude weight of container Switches easily between grams and ounces 3000 gram (106 oz) capacity Battery included Scale DS-2

 Features a tough, composite housing and both Metric and English readings up to 12 feet (3.65 M). Small and handy Tape Measure RR-12

 Measures spoke length, bearing diameter, cotter diameter Blue anodized aluminum Ruler/Cotter Gauge SBC-1