/ Precision Measuring Tools / Precision Hand Tools / Bore Gages / Mechanical Bore Micrometers / 78XTZ-9 * Not actual product image 67857 78XTZ-9 Bore Gage 67857 Other similar products The Starrett 78XT Series Internal Micrometer features extended travel, reducing the need to exchange anvils. The ground contact points seat the internal micrometer faster and more accurately than the spherical contacts found in other gages. The rugged and accurate internal micrometer is available individually or in economical sets from .040-12" (1-300mm). 8-9" Range, w/3 Point Carbide Contact. Features Specifications Contact Starrett Features Wide measurement range without changing anvils Tungsten carbide measuring faces on all 3-point heads above 1/2" (12.5mm) Ratchet stop ensures consistent measurements Self-centering contacts for true readings Blind bore measuring capability above 1/2" (12.5mm) diameter Extensions available up to 6" (150mm) for deep hole measuring Setting rings included Depth stop/collar also available for .080"-.250" (1-6mm) range Each micrometer bore gage is furnished in a case, complete with setting ring, contacts, wrenches, and instructions Specifications Range (in): 8-9" Graduations (in): .00025" Approximate Measuring Depth (in): 4-1/2"