UNC-draadplugmeter Amerikaanse standaard UNF-plugmeter
Onderdeel nr: PG-202
UN = Unified National Fixed Pitch Series
UNC = Unified National Grove Series
UNF = Unified National Fine Series
UNEF = Unified National Extra Fine Series
UNS = Unified National Special
Tolerantieklasse inwendige schroefdraad: 1B,2B,3B;
UNC = Unified National Grove Series
UNF = Unified National Fine Series
UNEF = Unified National Extra Fine Series
UNS = Unified National Special
Tolerantieklasse inwendige schroefdraad: 1B,2B,3B;
Tolerantieklasse uitwendige schroefdraad: 1A,2A,3B