Back Plunger Dial Indicators Archives

Back plunger type dial gauges are suitable for mounting onto leveling machine tool tables or inspection jigs, and for use in situations where standard dial gauges are difficult to read.
Model 1960T and 1961T, which uses Mitutoyo’s proprietary shock-proofing mechanism, has excellent durability and shock resistance.

DIMENSIONS

Order No.	A	B	C	E	F	G	H
1166T	40	22.1	35.6	22.2	25	10.9	42
1167T	40	22.1	35.6	22.2	25	10.9	42
1168T	40	22.1	35.6	22.2	25	10.9	42
1961T	40	22.1	35.6	22.2	25	10.9	40

Order No.	A	B	C	E	F	G	H
1160T	40	22.1	35.6	22.2	25	13.8	43.3
1162T	40	22.1	35.6	22.2	25	13.8	43.3
1960T	40	22.1	35.6	22.2	28.7	12.8	46

Note 1:
Contact point (standard accessory) for all products in this page has a role as a top dead point stopper. For this reason, if you need to install an optional contact point with an outside diameter smaller than 7mm, use a washer (with outside diameter of at least 7mm, inside diameter of 3mm, and thickness of approx. 0.5mm) placed between the contact point and the spindle.
Note 2:
Dimensions of the inch (ANSI/AGD Type) dial indicator partly differ from those of the metric (ISO/JIS Type) indicator.
Note 3:
Inch (ANSI/AGD Type) dial indicators are provided with a stem of 3/8″ dia. and #4-48UNF thread mount for the contact point.

SPECIFICATIONS
Metric

Order No.	Graduation	Range (range/rev)	Accuracy				Repeatbility	Dial reading	Measuring force
Order No.	Graduation	Range (range/rev)	Overall	Retrace	1/10 Rev	1 Rev	Repeatbility	Dial reading	Measuring force
1960T	0.01mm	1mm (1.27mm)	14µm	4µm	8µm	—	3µm	50-0-50	1.4N or less
1160T	0.01mm	5mm (1mm)	16µm	4µm	8µm	14µm	3µm	±0-100	1.4N or less
1162T	0.01mm	5mm (1mm)	16µm	4µm	8µm	14µm	3µm	100-0	1.4N or less

* Completed products inspection is performed in the vertical position (contact point downward) and the stated accuracy is guaranteed.

Inch

Order No.	Graduation	Range (range/rev)	Accuracy		Repeatbility	Dial reading	Measuring force
Order No.	Graduation	Range (range/rev)	First 1 Rev / 2.5 Rev / 10 Rev	Retrace	Repeatbility	Dial reading	Measuring force
1961T	.001”	.04” (.05”)	±.001” / — / —	.0002”	±.0002”	20-0-20	1.4N or less
1166T	.001”	.2” (.05”)	±.001” / ±.001” / ±.001”	.00033”	±.0002”	±0-50	1.4N or less
1167T	.001”	.2” (.05”)	±.001” / ±.001” / ±.001”	.00033”	±.0002”	0-25-0	1.4N or less
1168T	.001”	.2” (.05”)	±.001” / ±.001” / ±.001”	.00033”	±.0002”	50-0	1.4N or less

* Completed products inspection is performed in the vertical position (contact point downward) and the stated accuracy is guaranteed.

FEATURES
Metric

Inch

Holding bar (optional)

Order No.	øD	L
21AAA166	ø6mm	42mm
136567	ø6mm	81mm
124625	ø6.35mm	81mm
21AAA167	ø6.35mm	42mm
21AAA168	ø8mm	42mm
136568	ø8mm	81mm

* øD and L: detail shown in drawing below.

Back plunger type dial gauges are suitable for mounting onto leveling machine tool tables or inspection jigs, and for use in small spaces where the graduations of standard dial gauges are difficult to see.
Models 2960T, 2961T, 2990T-10 and 2991T-10, which use Mitutoyo’s proprietary shock-proofing mechanism, have excellent durability and shock resistance.
Model 2990T-10 provides 0.001mm graduation.

DIMENSIONS

* The shoulder on a contact point (standard accessory) for 2960T and 2961T acts as a stop to prevent spindle overrun that may otherwise damage the indicator. For this reason, if you need to install an optional contact point with an outside diameter smaller than 7mm, use a washer (with outside diameter of at least 7mm, inside diameter of 3mm, and thickness of approx. 0.5mm) placed between the contact point and the spindle.

Metric

Order No.	Graduation	Range (range/rev)	Accuracy				Repeatbility	Dial reading	Measuring force
Order No.	Graduation	Range (range/rev)	Overall	Retrace	1/10 Rev	1 Rev	Repeatbility	Dial reading	Measuring force
2960T	0.01mm	1mm (1.27mm)	14µm	4µm	8µm	—	3µm	50-0-50	1.4N or less
2990T-10	0.001mm	0.1mm (0.14mm)	5µm	2µm	2.5µm	—	1µm	50-0-50	1.5N or less

* Completed products inspection is performed in the vertical position (contact point downward) and the stated accuracy is guaranteed.

Inch

Order No.	Graduation	Range (range/rev)	Accuracy		Repeatbility	Dial reading	Measuring force
Order No.	Graduation	Range (range/rev)	First 1 Rev / 2.5 Rev / 10 Rev	Retrace	Repeatbility	Dial reading	Measuring force
2961T	.0005”	.04” / .05”	±.0005” / — / —	.00016”	±.0001”	20-0-20	1.4N or less
2991T-10	.0001”	.008” / .01”	±.0002” / — / —	.0001”	±.00005”	4-0-4	1.5N or less

* Completed products inspection is performed in the vertical position (contact point downward) and the stated accuracy is guaranteed.

Metric

Inch

Holding bar (optional)

Order No.	øD	L
21AAA166	ø6mm	42mm
136567	ø6mm	81mm
124625	ø6.35mm	81mm
21AAA167	ø6.35mm	42mm
21AAA168	ø8mm	42mm
136568	ø8mm	81mm

* øD and L: detail shown in drawing below.