Speed knob for an IKA RW-16 laboratory overhead stirrer.
Made in Fusion 360 and fixed after 1st prototype in Tinkercad.
Print standing up. Printed with 0,25 mm nozzle, but you probably can get away with a standard 0,4 mm nozzle even for the tiny tabs at the end. No supports needed
The author hasn't provided the model origin yet.