781BXTZ AccuBore Electronic Bore Gauges

Cat No.	Range	Resolution	Accuracy	Meas. Depth	Setting Ring Ø
781BXTZ-100	2-2.5 mm (.080-.100”)	0.001 mm (.00005”)	.004 mm (.00015”)	9 mm	2.54mm (.100”)
781BXTZ-120	2.5-3 mm (.100-.120”)	0.001 mm (.00005”)	.004 mm (.00015”)	9 mm	2.54mm (.100”)
781BXTZ-160	3-4 mm (.120-.160”)	0.001 mm (.00005”)	.004 mm (.00015”)	12 mm	4.06mm (.160”)
781BXTZ-200	4-5 mm (.160-.200”)	0.001 mm (.00005”)	.004 mm (.00015”)	18 mm	5.08mm (.200”)
781BXTZ-250	5-6 mm (.200-.250”)	0.001 mm (.00005”)	.004 mm (.00015”)	18 mm	5.08mm (.200”)
781BXTZ-312	6-8 mm (1/4-5/16”)	0.001 mm (.00005”)	.004 mm (.00015”)	58 mm	7.94mm (.3125”)
781BXTZ-375	8-10 mm (5/16-3/8”)	0.001 mm (.00005”)	.004 mm (.00015”)	58 mm	7.94mm (.3125”)
781BXTZ-500	10-12.5 mm (3/8-1/2”)	0.001 mm (.00005”)	.004 mm (.00015”)	62 mm	12.7mm (.500”)
781BXTZ-625	12.5-16 mm (1/2-5/8”)	0.001 mm (.00005”)	.004 mm (.00015”)	62 mm	12.7mm (.500”)
781BXTZ-750	16-20 mm (5/8-3/4”)	0.001 mm (.00005”)	.004 mm (.00015”)	66 mm	19.05mm (.750”)
781BXTZ-1	20-25 mm (3/4-1”)	0.001 mm (.00005”)	.004 mm (.00015”)	66 mm	19.05mm (.750”)
781BXTZ-138	25-35 mm (1-1-3/8”)	0.001 mm (.00005”)	.004 mm (.00015”)	80 mm	34.93mm (1.375”)
781BXTZ-2	35-50 mm (1-3/8-2”)	0.001 mm (.00005”)	.004 mm (.00015”)	80 mm	34.93mm (1.375”)
781BXTZ-258	50-65 mm (2-2-5/8”)	0.001 mm (.00005”)	.005 mm (.0002”)	80 mm	65.68mm (2.625”)
781BXTZ-314	65-80 mm (2-5/8-3-1/4”)	0.001 mm (.00005”)	.005 mm (.0002”)	85 mm	82.55mm (3.250”)
781BXTZ-4	80-100 mm (3-1/4-4”)	0.001 mm (.00005”)	.005 mm (.0002”)	100 mm	82.55mm (3.250”)
781BXTZ-5	100-125 mm (4-5”)	0.001 mm (.00005”)	.006 mm (.00025”)	100 mm	127.00mm (5.0”)
781BXTZ-6	125-150 mm (5-6”)	0.001 mm (.00005”)	.006 mm (.00025”)	100 mm	127.00mm (5.0”)
781BXTZ-7	150-175 mm (6-7”)	0.001 mm (.00005”)	.007 mm (.0003”)	100 mm	177.80mm (7.0”)
781BXTZ-8	175-200 mm (7-8”)	0.001 mm (.00005”)	.007 mm (.0003”)	100 mm	177.80mm (7.0”)

 

GAUGE SETS

Cat No.	Range	Resolution	No of heads	No of rings
S781BXTBZ	2-6 mm (.080-.250”)	0.001 mm (.00005”)	5	3
S781BXTCZ	6-10 mm (.250-.375”)	0.001 mm (.00005”)	2	1
S781BXTHZ	6-20 mm (.250-.750”)	0.001 mm (.00005”)	5	3
S781BXTDZ	10-20 mm (.375-.750”)	0.001 mm (.00005”)	3	2
S781BXTEZ	20-50 mm (.750-2.00”)	0.001 mm (.00005”)	3	3
S781BXTJZ	20-100 mm (.750-4.00”)	0.001 mm (.00005”)	6	4
S781BXTFZ	50-100 mm (2.00-4.00”)	0.001 mm (.00005”)	3	2
S781BXTKZ	100-150 mm (4.00-6.00”)	0.001 mm (.00005”)	2	1
S781BXTGZ	100-200 mm (4.00-8.00”)	0.001 mm (.00005”)	4	4
S781BXTLZ	150-200 mm (6.00-8.00”)	0.001 mm (.00005”)	2	1

 

781 PISTOL GRIP GAUGE ONLY WITH INDICATOR

Without measuring head and ring

Cat No.	Range
781BXTP-250	2-6 mm (0.08-0.25”)
781BXTP-750	6-20 mm (1/4-3/4”)
781BXTP-4	20-100 mm (3/4-4”)
781BXTP-12	100-300 mm (4-12”)

 

EXTENSIONS FOR 78, 780 AND 781 BORE GAUGES

Cat No.	Model Size	Extension Size
78/782F	6-8 mm (1/4-5/16”)	63 mm
78/782G	10-12.5 mm (3/8-1/2”)	75 mm
78/782H	12.5-20 mm (1/2-3/4”)	100 mm
78/782J	20-50 mm (3/4-2”)	150 mm
78/782K	50-300 mm (2-12”)	150 mm

 

BORE GAUGE HEADS

Special Bore Gauge Measuring Heads          

We offer several configurations of special purpose measuring heads for 780, and 781 Bore Gauges, available by special order. Some, but not all, of these will also work with the 78 Bore Gauges.

GROOVE MEASURING HEADS 

• Groove. Available as a 2-point system for ovality measurement 
• Various 2-point anvil forms available with diameters from 2-300mm / 080-12” 
• Grooves. Available as a 3-point system 
• Various 3-point anvil forms available for diameters from 6-300mm / .250-12”

THREAD MEASURING HEADS 

• Thread Measuring Heads are available as a two point system from M4-8mm / 8 to 5/16" and a three point system from 9.5-300mm / 3/8"-12”. Most forms available including UNC, UNF, UNJ, UNS, Buttress, Acme, Multi-start, LH and RH
• Thread. Thread forms available as a 3-point system 
• Internal. To measure effective (functional) diameter, pitch diameter 

​​​​​​​SPHERICAL RADIUS MEASURING HEADS 

• Spherical Radius. Available as 2-point to measure ovality or with 3-point contact.
• Available with diameters from 6-100mm / .236-3.93" 
• 3-Point Spherical. Available in 3-300mm / .118-12" range 
• Gives good repeatability even when somewhat out of line with bore center