231 2-Point Contact .080-.250 range Approximate Setting Measuring Ring Range Accuracy Depth Diameter Inches Inches Inches Inches Catalog No. EDP No. .080-.100 3/8 .100 78XTZ-100 68124 .100-.120 3/8 .100 78XTZ-120 68125 .120-.160 .00010 15/32 .160 78XTZ-160 68126 .160-.200 3/4 .160 78XTZ-200 68127 .200-.250 3/4 .200 78XTZ-250 68128 3-Point Contact 1/4-12 range 1/4 – 5/16 2-1/4 .3125 78XTZ-312 68129 5/16 – 3/8 2-1/4 .3125 78XTZ-375 68130 3/8 – 1/2 2-1/4 .500 78XTZ-500 68131 1/2 – 5/8 2-7/16 .500 78XTZ-625 68132 5/8 – 3/4 .00015 2-7/16 .750 78XTZ-750 68133 3/4 – 1 2-5/8 .750 78XTZ-1 68134 1 – 1-3/8 2-5/8 1.375 78XTZ-138 67674 1-3/8 – 2 3-1/16 1.375 78XTZ-2 67675 2 – 2-5/8 3-1/16 2.625 78XTZ-258 67676 2-5/8 – 3-1/4 .00020 3-1/16 2.625 78XTZ-314 67677 3-1/4 – 4 4 3.250 78XTZ-4 67678 4 – 5 .00025 4 5.0 78XTZ-5 67679 5 – 6 4-1/2 5.0 78XTZ-6 67680 6 – 7 4-1/2 7.0 78XTZ-7 67681 7 – 8 .00030 4-1/2 7.0 78XTZ-8 67682 8 – 9 4-1/2 9.0 78XTZ-9 67857 9 – 10 4-5/8 9.0 78XTZ-10 67858 10 – 11 .00035 4-5/8 11.0 78XTZ-11 67859 11 – 12 4-5/8 11.0 78XTZ-12 67860 The No. 78XT Series Internal Micrometers feature 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. These rugged and accurate internal micrometers are available individually or in economical sets from .040-12 (1-300mm). Features Ÿ Wide measurement range without changing anvils Ÿ Resolution from .0001 (0.0025mm) on the 2-point contact tools ranging up to 1/4 (6mm) and .0002 (0.005mm) on the 3-point contact tools ranging from 1/4-12 (6mm - 300mm) Ÿ Tungsten carbide measuring faces on all 3-point heads above 1/2 (12.5mm) Ÿ Ratchet stop ensures consistent measurements Ÿ Self-centering contacts for true readings Ÿ Blind bore measuring capability above 1/2 (12.5mm) diameter Ÿ Extensions available up to 6 (150mm) for deep hole measuring Ÿ Setting rings included Ÿ Depth stop/collar also available for .080-.250 (1-6mm) range Each micrometer is furnished in a case, complete with setting ring, contacts, wrenches, and instructions. No. 78XT Series .080-12 / 1-300mm Ranges No. 78XTZ-2 (inch model). 78XTZ-138 Measuring a bore. (Continued on next page.) BORE GAGES No. 78XT Series .080-12 No. 78MXT Series 1-300mm

233 BORE GAGES We offer several configurations of special purpose measuring heads for 780, and 782 Series bore gages, available by special order. Some, but not all, of these will also work with the 78 Series Internal Micrometer. 2-point and 3-point heads are available for thread measuring applications. 2-point and 3-point heads are available with various anvils to measure specialized internal grooves. 2-point and 3-point spherical radius heads heads are available. Special Measuring Heads for 78, 780 & 782 Series Groove Measuring Heads Ÿ Groove. Available as a 2-point system for ovality measurement....