Radius Gauge +/- 0.2mm Accuracy
Radius Gauge
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F3D also attached so you can edit if required.
Please see picture for formula, which are derived from the original.
The zero setting should be the same as the zero setting for the actual caliper, since the caliper fits into the tool fully, and there is no extra length to be considered!
Also, for simpler math, the distance between the 2 prongs is intentionally set at exactly 75mm and no decimals!
Formula 1 (For radius that fits within the 2 prongs):
R = d x 2.414 (also engraved on the part)
Formula 2 (For radius that fits outside the 2 prongs):
R = ((75^2)+4(d^2))/(8d)
Please feel free to leave a comment if you have any questions or need any help.
Print Settings
Printer: Ender 3 Pro
Rafts: No
Supports: No
Resolution: 0.12
Infill: 20
Filament material: PETG
You will get both the F3D file and the STL file. The F3D is a Fusion 360 file that you can easily edit to spec if your caliper is slightly different from mine.