I dont want to calibrate every hand bender or clock bender I use. I want to grab a Greenlee 555 bender and know the center of bends, not waste 10 of pipe to "calibrate it". I think the calibration is a neat feature but factory bender settings should be preloaded.
Only a Ideal half inch bender comes preloaded.
Most manufactures of hand benders provide the centerline radius. Most clock benders have the radius printed on the shoe. I know every bender is slightly different but at least preload some basic values. Given the centerline radius and size of pipe I can calculate the gain myself. The take up is usually printed right on the bender.
Concerned Customer23 about My Bender, v2.3.4