Radius gauge apparatus for vernier caliper

prusaprinters

<p>Simple apparatus to help measure radius on 90° edges, with a vernier caliper. This size can measure between 4mm-20mm.<br/> I needed to measure the radius on various phones and tables, and found out there was no simple solution, so i modeled this, and printed it on reprappro mendel tricolor.</p> <p>updated instructions (thanks to krosstoph for pointing it out)</p> <p>How to use (see pictures)</p> <ul> <li>insert the depth measurement end of the caliper in to the slot. Zero your caliper at 9.89mm for convenience. </li> <li>Rest the object on the right angle edges. </li> <li>Push the depth measurement pin till it reaches your radius. </li> <li><p>divide the measurement to 0.414mm then add 4mm to get the radius. (remember zero measurement means 4mm radius) alternative calculation:</p> </li> <li><p>zero the caliper at 8.24 (outer diagonal), then take the measurement.</p> </li> <li>multiply by 2.414 </li> </ul> Category: Tools