Revised version of the dial indicator mount by arnoldpro. This version has been extended to fit my state of the art harbor freight dial indicator that has a non removable mounting dodad on the back. This is dial holder designed to be attached to the extruder/fan mount of a Makergear M2. Remove the fan and attach using a single M3 x 35mm bolt. The head of the bolt that holds the bearing fits the hole on the right of the dial holder and supports the holder and dial. This dial holder is quick to attach and remove.1) Print part 2) Remove fan assembly 3) Install part 4) Insert Dial Indicator 5) Indicate