Test for concentric running shaft

thingiverse

This device is designed to measure the radial runout of our smooth rods easily and accurately. To use it, simply attach the aligned parts to a stable surface that's as smooth as possible. It's essential to position these parts in perfect line with each other. I utilize an aluminum U-profile measuring 43.4 x 23.4 x 1.5 mm, which can be purchased at any DIY store.