Insize 1168-300A, DIGITAL DRUM BRAKE CALIPER, 0-12″/0-300mm, 6928640302657

Resolution: .0005″/0.01mm.
Measure internal and external diameter of drum brakes.
Buttons: on/off, zero, inch/mm.
Automatic power off, move the digital unit to turn on power.
Battery CR2032. Data output.
Made of stainless steel.
Optional accessory: data output cable