E39 Go Gauge and Not Go Gauge of Lamp Caps of 7006-24C-1 and 7006-24B-1

IEC60061-3: 7006-24B-1 E39 go gauge for Caps on Finished Lamps

The sharp part of the edge of the thread shall be broken with a radius of 0.2 mm to 0.3 mm.

PURPOSE: 

To check the maximun dimensions of the crew thread and dimension T1 min, of E39 caps on finished lamps.

TESTING: 

When the cap on a finished lamp has been screwed into the gauge as far as it will go, the centre contact of the cap shall be co-planar with, or project beyond, surface X, When the lamp is being removed from the gauge, at least two fall turns shall be required to disengage the threads.