Phonograph tone arm mounting, decoupling, vertical tracking angle adjustment system, and vertical guide system

A tone arm mounting and vertical guide system comprising:

• a. an adjuster screw (301) affixed to a tone arm pedestal (106) by an adjuster screw fastening means (305);
• an adjuster wheel (302) is adjustably received by adjuster wheel (302) receiving and adjusting means at the adjuster screw (301);
• the adjuster screw (301) is received into a thrust bushing (307) at an arm board (206);
• the thrust bushing (307) having a thrust bushing top face (308);
• the adjuster wheel (302) rotatably bearing against the thrust bushing top face (308), the thrust bushing (307) mounted in an arm board (206) with the bore of thrust bushing (307) perpendicular to the top plane of arm board (206);
• rotation of the adjuster wheel (302) adjusts the VTA (110);
• b. a vertical guide system (370) in which a set of pedestal features (115) of tone arm pedestal (106), or any attachment thereto, are keyed to, and slidably received in the vertical direction, by a matching set of arm board features (208) of arm board (206), or any attachment thereto;
• said set of pedestal features (115), or set of arm board features (208), or both, of cylindrical topology (generated by vertical line elements).