Ribber dial for a Griswold & Harrison Circular Sock Machine Ribbers

In the UK, Griswold 4.5" circular sock knitting machines are fairly common. The Harrison CSM is not. But I have a Harrison ribber on a Griswold CSM. The shape of the mounting parts of the Harrison is different to the Griswold ribber so dials are not transferable between them. This is a parametric ribber design that will fit the Harrison ribber with the diameter set for the Griswold 4.5" CSM. You can edit the diameter, slot width, slot depth, slot number and various other things. Update: The file ribber_dial.scad merges the Harrison and Griswold designs. You can choose between the two types of mount. There is a dot where pin 1 is. There are numbers marked labeling each needle slot. You can set knit-perl patterns with needle_pattern_knit and needle_pattern_perl. You can set the CSM size (E.G. 4,5" or 4 1/8") and it will compute the dial diameter. Update #2: The linear_extrude() command takes in a vector for the extrusion direction. But older versions of openscad do not. The direction used is the default so the vector assignment doesn't need to be there. Remove the assignment should make it work with older OpenSCADs. Update #3: I got the prints back for the Harrison mount with a 64 slot and a 32 slot. These work - but - (1) The sync stick is wrong and needed manual reshaping. This update fixes that. (2) The slot sept (dial_top_thickness) has been increased a little to lower the pins. (3) The slot width has been increased by 0.2mm. The needles fit but they were a little tight. Update #4 The text on the bottom now includes the size of the CSM. The sync pin now has a slant to give more space for the yarn. The design is in OpenSCAD.