Pry the top dial face (<1g) off using either a pry tool or a slotted head screwdriver. The dial face is made from a rubberised material

Diameter: 40mm

Height: 12mm

Upon prying, remove the click indicator, shaft, and retention spring. These are situated behind the face, providing tactile feedback to the user when operating the dial

Unscrew the 4 12mm long exposed button head M2 Phillips screws (<1g), allowing removal of the dial housing (3g)

Diameter: 53mm

Height: 20mm

Behind the housing seats a potentiometer PCB. This can be slid out from its clips. The potentiometer functions as a speed indicator, with the changing resistance corresponding to a different speed setting