XT ANALOGUE THREE POINT MECHANICAL BORE GAUGE

Code:XTA20MXTA25MXTA35MXTA50MXTA65MXTA80MXTA100MXTA125MXTA150MXTA175MXTA200MXTA225MXTA250MXTA275MXTA1MXTA2MXTA3MXTA4MXTA5MXTA8MXTA6MXTA10MXTA12MXTA16MMXTA1iMXTA2iMXTA3iMXTA4iMXTA5iMXTA6iMXTA8iMXTA10iMXTA12iMXTA16iXTA20iXTA25iXTA35iXTA50iXTA65iXTA80iXTA100iXTA125iXTA150iXTA175iXTA200iXTA225iXTA250iXTA275iXT Setting Rings – Metric Code No. Setting Ring (mm) XTR3M 2.5 XTR5M 4.00 XTR7M 5.00 XTR8M 8.00 XTR12M 12.50 XTR20M 20.00 XTR35M 35.00 XTR65M 65.00 XTR80M 80.00 XTR125M 125.00 XTR175M 175.00 XTR225M 225.00 XTR275M 275.00XTR3MXTR5MXTR7MXTR8MXTR12MXTR20MXTR35MXTR65MXTR80MXTR125MXTR175MXTR225MXTR275MXTR3iXTR5iXTR7iXTR8iXTR12iXTR20iXTR35iXTR65iXTR80iXTR125iXTR175iXTR225iXTR275iCode No. Range (mm) SMXTA1M 2-3 SMXTA2M 3-6 SMXTA3M 6-10 SMXTA4M 10-20SMXTA1MSMXTA2MSMXTA3MSMXTA4MSMXTA1iSMXTA2iSMXTA3iSMXTA4iCode No. Range (mm) SXTA5M 20-50 SXTA6M 50-100 SXTA7M 100-150 SXTA8M 150-200SXTA5MSXTA6MSXTA7MSXTA8MSXTA5iSXTA6iSXTA7iSXTA8iEGX0200EGX0004EGX0500EGX0001EGX0400... ▾ (+99)

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▪Bowers XT Analogue three Point Mechanical Bore Gauges are an economical solution to accurate shop-floor bore measurement.
▪The extended mechanical travel of these advanced two or three point gauges ensures that exchanging measuring anvils is now unnecessary.

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XT ANALOGUE THREE POINT MECHANICAL BORE GAUGE

Product Overview

The Bowers XT Analogue Three Point Mechanical Bore Gauge provides an economical solution for accurate shop-floor bore measurement. Engineered with extended mechanical travel, these advanced two- and three-point gauges eliminate the need to exchange measuring anvils. The wide application range (2–300mm), rugged construction, and easy-to-read scale ensure both accuracy and ease of use. XT measuring heads and setting rings are supplied with UKAS certification. The XTA Micro line covers the 2–20mm measuring range, incorporating a more compact mechanical controller and a Vernier scale to improve resolution.

Key Features & Capabilities

Measurement Range: 2–300mm (0.080"–12")
Contact Points: 2-point measurement for 2–6mm; 3-point measurement for 6–300mm
Extended Travel: Extended mechanical travel removes the necessity of exchanging measuring anvils
Measuring Faces: Tungsten carbide measuring faces fitted on all 3-point heads from 12.5mm and above
Blind Bore Measurement: Supported from 2mm–6mm and above 12.5mm (0.500")
Deep Hole Measurement: Extensions available above 6mm
Ratchet Stop: Ensures consistent, repeatable measurement
Traceability & Standards:
Setting rings included with individual instruments and sets
UKAS certificates supplied as standard with all setting rings and XT mechanical gauges
Serial numbers marked on all gauges
Manufactured in accordance with DIN 863, part 4
Storage: Supplied in a fitted case

Technical Specifications

XTA Micro: Individual Instruments (Metric)

Code No. (with Ring)	Code No. (without Ring)	Range (mm)	Accuracy (mm)	Depth (mm)	Setting Ring (mm)
MXTA1M	MXTA1W	2–2.5	0.004	9	2.50
MXTA2M	MXTA2W	2.5–3	0.004	9	2.50
MXTA3M	MXTA3W	3–4	0.004	12	4.00
MXTA4M	MXTA4W	4–5	0.004	18	4.00
MXTA5M	MXTA5W	5–6	0.004	18	5.00
MXTA6M	MXTA6W	6–8	0.004	58	8.00
MXTA8M	MXTA8W	8–10	0.004	58	8.00
MXTA10M	MXTA10W	10–12.5	0.004	58	12.50
MXTA12M	MXTA12W	12.5–16	0.004	62	12.50
MXTA16M	MXTA16W	16–20	0.004	62	20.00

XTA Micro: Individual Instruments (Imperial)

Code No.	Range (inch)	Accuracy (inch)	Depth (inch)	Setting Ring (inch)
MXTA1i	0.080–0.100	0.00015	0.35	0.1000
MXTA2i	0.100–0.120	0.00015	0.35	0.1000
MXTA3i	0.120–0.160	0.00015	0.47	0.1600
MXTA4i	0.160–0.200	0.00015	0.70	0.1600
MXTA5i	0.200–0.250	0.00015	0.70	0.2000
MXTA6i	1/4–5/16	0.00015	2.28	0.3125
MXTA8i	5/16–3/8	0.00015	2.28	0.3125
MXTA10i	3/8–1/2	0.00015	2.28	0.500
MXTA12i	1/2–5/8	0.00015	2.44	0.500
MXTA16i	5/8–3/4	0.00015	2.44	0.750

XTA Standard: Individual Instruments (Metric)

Code No. (with Ring)	Code No. (without Ring)	Range (mm)	Accuracy (mm)	Depth (mm)	Setting Ring (mm)
XTA20M	XTA20W	20–25	0.004	66	20.00
XTA25M	XTA25W	25–35	0.004	66	35.00
XTA35M	XTA35W	35–50	0.004	80	35.00
XTA50M	XTA50W	50–65	0.005	80	65.00
XTA65M	XTA65W	65–80	0.005	80	65.00
XTA80M	XTA80W	80–100	0.005	100	80.00
XTA100M	XTA100W	100–125	0.006	115	125.00
XTA125M	XTA125W	125–150	0.006	115	125.00
XTA150M	XTA150W	150–175	0.007	115	175.00
XTA175M	XTA175W	175–200	0.007	115	175.00
XTA200M	XTA200W	200–225	0.008	118	225.00
XTA225M	XTA225W	225–250	0.008	118	225.00
XTA250M	XTA250W	250–275	0.009	118	275.00
XTA275M	XTA275W	275–300	0.009	118	275.00

XTA Standard: Individual Instruments (Imperial)

Code No.	Range (inch)	Accuracy (inch)	Depth (inch)	Setting Ring (inch)
XTA20i	3/4–1	0.00015	2.62	0.750
XTA25i	1–1 3/8	0.00015	2.62	1.375
XTA35i	1 3/8–2	0.00015	3.15	1.375
XTA50i	2–2 5/8	0.00020	3.15	2.625
XTA65i	2 5/8–3 1/4	0.00020	3.15	2.625
XTA80i	3 1/4–4	0.00020	3.94	3.250
XTA100i	4–5	0.00025	4.53	5.000
XTA125i	5–6	0.00025	4.53	5.000
XTA150i	6–7	0.00030	4.53	7.000
XTA175i	7–8	0.00030	4.53	7.000
XTA200i	8–9	0.00030	4.65	9.000
XTA225i	9–10	0.00030	4.65	9.000
XTA250i	10–11	0.00035	4.65	11.000
XTA275i	11–12	0.00035	4.65	11.000

XTA Micro Sets

Code No. (with Ring)	Code No. (without Ring)	Range (mm)	Measuring Heads	Setting Rings	Code No. (Imperial)	Range (inch)
SMXTA1M	SMXTA1W	2–3	2	1	SMXTA1i	0.080–0.120
SMXTA2M	SMXTA2W	3–6	3	2	SMXTA2i	0.120–0.250
SMXTA3M	SMXTA3W	6–10	2	1	SMXTA3i	1/4–3/8
SMXTA4M	SMXTA4W	10–20	3	2	SMXTA4i	3/8–3/4

XTA Standard Sets

Code No. (Metric)	Range (mm)	Measuring Heads	Setting Rings	Code No. (Imperial)	Range (inch)
SXTA5M	20–50	3	2	SXTA5i	3/4–2
SXTA6M	50–100	3	2	SXTA6i	2–4
SXTA7M	100–150	2	1	SXTA7i	4–6
SXTA8M	150–200	2	1	SXTA8i	6–8

XT Setting Rings

Metric Code No.	Setting Ring (mm)	Imperial Code No.	Setting Ring (inch)
XTR3M	2.5	XTR3i	0.1000
XTR5M	4.00	XTR5i	0.1600
XTR7M	5.00	XTR7i	0.2000
XTR8M	8.00	XTR8i	0.3125
XTR12M	12.50	XTR12i	0.500
XTR20M	20.00	XTR20i	0.750
XTR35M	35.00	XTR35i	1.375
XTR65M	65.00	XTR65i	2.625
XTR80M	80.00	XTR80i	3.250
XTR125M	125.00	XTR125i	5.000
XTR175M	175.00	XTR175i	7.000
XTR225M	225.00	XTR225i	9.000
XTR275M	275.00	XTR275i	11.000