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Parameters

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15
45

Outer diameter of the knob in mm

10
30

Total height of the knob in mm

5
8

Nominal diameter of the round section of the D-shaft in mm

3.5
7.5

Nominal thickness across the flat section of the shaft in mm (e.g. 4.5mm for 6mm shaft)

6
25

Depth of the shaft socket inside the knob in mm

0.05
0.5

Radial 3D print clearance for snug fit on shaft in mm

16
60

Number of knurl ribs around the perimeter

0.6
3

Width of the pointer indicator groove in mm

0.4
2

Depth of the pointer indicator groove in mm

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