Uses a 12 posititon rotary switch like: https://www.google.com/search?q=lorlin+12+position+rotary+switch

On AX (non aff): https://www.aliexpress.com/w/wholesale-12-position-switch.html?SearchText=12+position+switch&trafficChannel=main&catId=0&g=y&sortType=total_tranpro_desc

The resistors are standard 3W resistors.
The cables are routed through the housing through a slot, which i melted into the plastic with a heated exacto knife. This also serves as a strain relief.

The body already includes the dial, but there was a typo and I was unsatisfied with it in general. So i made a separate dial, which is sandwhichd within the body and switch nut.