Starrett 776-9 68821

Cartridge-Type Head. Tungsten carbide ball contacts. Head will accept any Metric Thread AGD style contact. Half-bridge construction, stainless steel body. .375 (9.5mm) mounting diameter allows replacement of standard AGD dial indicators. /-.100 (2.54mm) Probe Half-bridge construction, stainless steel body. .375 (9.5mm) mounting diameter allows replacement of standard AGD dial indicators.