A full gauge catalogue for IEC 60061 runs to hundreds of items, and no small lab needs all of them. The right starting point is the set that covers the caps the lab actually sees, plus the instruments that keep those gauges honest.
Thread or pin go and no-go members for the dominant cap families in the region: E27 and E14 for screw caps, GU10 and G13 for pin caps, B22 where bayonet products are made or imported. Add the contact-making gauge for each family, because it is the only check that predicts whether the lamp will light.
A reference holder per family with a known spring force, a torque wrench covering the holder test range, a depth gauge or comparator for contact position, a loupe for gauge inspection, and a thermometer for the room. Without the support equipment the gauges produce results that cannot be interpreted.
Add gauges for each new cap family as it appears in the product mix, and add a coordinate machine only when diagnosis becomes a routine need rather than an occasional one. Buying breadth before the lab has the discipline to calibrate and store gauges properly produces a cabinet of unreliable instruments.
