Paragon Peep Plug with Hole

PL1 Peephole Plug, tapers from 1 5/8" to 1", with 1/2" (12.7 mm) thermocouple hole. Conveniently monitor a pyrometer without having to drill a hole in the kiln for the thermocouple. Before ordering, measure the diameter of your thermocouple.

Paragon part number PL1