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vernIer bore GAGes

78xt bore GAGes feAtures
.080-12"/1-300MM • Wide measurement range without changing anvils
• Resolution from .0001" (0.0025mm) on the
The 78XT Bore Gages feature extended travel, reducing the need to exchange anvils.
The ground contact points seat the internal micrometer faster and more accurately 2-point contact toolsup to 3/4" (20mm) and
than the spherical contacts found in other gages. These rugged and accurate internal .00025" (0.005mm) on the 3-point contact
micrometers are available individually or in economical sets from .080-12" (2-300mm). tools ranging from 3/4"-12" (20mm - 300mm)
• Tungsten carbide measuring faces on all
78XT Bore Gages, 2-Point Contact (.080-.250" Range) 3-point heads above 1/2" (12.5mm)
Approximate Setting Ring • Ratchet stop ensures consistent measurements
Cat. No. EDP Range (in) Accuracy (in) Measuring Depth (in) Diameter (in) • Self-centering contacts for true readings
78XTZ-100 68124 .080-.100 0.00015 3/8 .100
78XTZ-120 68125 .100-.120 • Blind bore measuring capability above 1/2" Bore GaGes
78XTZ-160 68126 .120-.160 0.00015 15/32 .160 (12.5mm) diameter
78XTZ-200 68127 .160-.200 0.00015 3/4 .160 • Extensions available up to 6" (150mm) for
78XTZ-250 68128 .200-.250 .200
78XT Bore Gages, 3-Point Contact (1/4-12" Range) deep hole measuring
Approximate Setting Ring • Setting rings included
Cat. No. EDP Range (in) Accuracy (in) Measuring Depth (in) Diameter (in)
78XTZ-312 68129 1/4-5/16 .3125 • Depth stop/collar also available for .080"-.250"
78XTZ-375 68130 5/16-3/8 .00015 2-1/4 .3125 (1-6mm) range
78XTZ-500 68131 3/8-1/2 .500 • Each micrometer bore gage is furnished in
78XTZ-625 68132 1/2-5/8 .00015 2-7/16 .500 a case, complete with setting ring, contacts,
78XTZ-750 68133 5/8-3/4 .750
78XTZ-1 68134 3/4-1 .00015 2-5/8 .750 wrenches, and instructions
78XTZ-138 67674 1-1-3/8 1.375
78XTZ-2 67675 1-3/8-2 .00015 3-1/16 1.375
78XTZ-258 67676 2-2-5/8 .00020 3-1/16 2.625
78XTZ-314 67677 2-5/8-3-1/4
78XTZ-4 67678 3-1/4-4 .00020 4 3.250 78XTZ-138 measuring a bore.
78XTZ-5 67679 4-5 .00025 4 5.0
78XTZ-6 67680 5-6 .00025 4-1/2 5.0
78XTZ-7 67681 6-7 7.0
78XTZ-8 67682 7- 8 .00030 4-1/2 7.0
78XTZ-9 67857 8-9 9.0
78XTZ-10 67858 9-10 .00030 4-5/8 9.0
78XTZ-11 67859 10-11 .00035 4-5/8 11.0
78XTZ-12 67860 11-12

78XT Sets, 2-Point Contact (.250" Range)
Cat. No. EDP Range (in) Number of Heads Number of Rings
S78XTBZ 68152 .120-.250 3 2
78XT Sets, 3-Point Contact (1/4-4" Range)
Cat. No. EDP Range (in) Number of Heads Number of Rings
S78XTCZ 68153 1/4-3/8 2 1
S78XTDZ 68154 3/8-3/4 3 2
S78XTEZ 67683 3/4-2 3 2
S78XTFZ 67684 2-4 3 2

78XTZ-2

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