Spinal Tap-HA!

I've started using spoked handwheels for electronic control knobs. This is still small enough for fine adjustment:

The center hole runs pretty close to true when chucked by the ID of the rim in a 3-jaw, to bore for the control shaft adapter.

-jsw

Reminds me of the dinosaur era tensile testing machine my boss asked me to get working. It had a 2' diameter load dial with a max needle, and handwheels fit for a WWII destroyer. The 1' square cast nameplate read "Baldwin Locomotive Works".

I ultimately talked him into a new Instron.

Pete Keillor