Timing - Good Times?

[bpOutdoors]

I am interested in understanding more detail on timing. Clearly the "clocking" of the screw slot is consistent on the Parker Shotguns.

The few Parker fasteners I have worked with seem to "bottom out" (full torque) at an exact vertical or horizontal position.

A) Was this achieved in the original manufacture using a torque tool?

B) Was the head rotation planned to that level of detail for a given thickness of grip length?

B) Was the vertical or horizontal position achieved by backing off from a fully torqued position?

C) Other method?

Thanks for any insight, observations you guys can provide on fastener timing.