Caliper Attachment Radius Measurement Tool & Test

These are attachments for a 6" Mitutoyo digital caliper for measuring radii. Any size radius is supported, and the two different formulas are printed on the larger attachment, as well on the reference target block.FEATURESCaliper slides in and snaps into place, no magnets needed.No supports required to print.Either attachment can measure any radius length, including very large radii.Calibration targets included featuring both small and large radii.Print profile includes an XY scale to compensate for PETG shrinkage (PETG suggested for dimensional stability).The models are all 12mm thick, and the black printing is just one or two layers above the top layer, so there is only one single filament change for the print color.THE MATHBoth the large and the small attachment are designed to allow for measuring any arbitrary-sized radius, using one of the following basic formulas. Accuracy gradually decreases for radii where a 90° arc segment has a chord larger than the max chord of the tool.