• Hardened tool-steel anvils (instead of titanium-coated carbide) for a more economically priced tool.
  • Same accuracy as the titanium-coated Holtest models.
  • For details of setting rings, refer to page C-47
  • Constant-force device allows repeatable measurement.
  • Can measure deep holes using an Extension Rod (optional).

Three point Internal Micrometers

Range (mm) L3 (mm) L5 (mm)
12 – 20 2.6 or below 3.5
20 – 30

 

3.4 or below

5.2
30 – 50 10
50 – 100 14
100 – 300 19.6 or below 13.8

SPECIFICATIONS

Metric individual

Order No. Range Graduation Accuracy*1 Extension Rod (optional)
368-764 12 – 16mm

 

 

 

 

 

 

 

0.005mm

±2µm (within 2µm) 952621 (150mm)
368-765 16 – 20mm
368-766 20 – 25mm

 

 

 

±3µm (within 3µm)

 

952622 (150mm)

368-767 25 – 30mm
368-768 30 – 40mm
368-769 40 – 50mm
368-770 50 – 63mm

 

 

 

 

 

952623 (150mm)

368-771 62 – 75mm
368-772 75 – 88mm
368-773 87 – 100mm
368-774 100 – 125mm

 

 

 

±5µm (within 5µm)

368-775 125 – 150mm
368-776 150 – 175mm
368-777 175 – 200mm
368-778 200 – 225mm
368-779 225 – 250mm
368-780 250 – 275mm
368-781 275 – 300mm

Inch individual

Order No. Range Graduation Accuracy*1 Extension Rod (optional)
368-864 .5″ – .65″

 

 

 

 

 

 

 

.0002″

±.0001″ (within .0001″) 952621 (150mm)
368-865 .65″ – .8″
368-866 .8″ – 1″

 

 

 

±.00015″ (within .00015″)

 

952622 (150mm)

368-867 1″ – 1.2″
368-868 1.2″ – 1.6″
368-869 1.6″ – 2″
368-870 2″ – 2.5″

 

 

 

 

 

952623 (150mm)

368-871 2.5″ – 3″
368-872 3″ – 3.5″
368-873 3.5″ – 4″
368-874 4″ – 5″

 

 

 

±.00025″ (within .00025″)

368-875 5″ – 6″
368-876 6″ – 7″
368-877 7″ – 8″
368-878 8″ – 9″
368-879 9″ – 10″
368-880 10″ – 11″
368-881 11″ – 12″

*1 Excluding quantizing error.
Accuracy: values measured across the entire measuring face.
Maximum difference: differences between the maximum and minimum values.
* Setting ring and extension rod:optional.
* It is not advisable to use measuring heads other than as supplied as a standard accessory, or widen a measuring range by using any other multiple sub-measuring (The measuring accuracy in such cases is not guaranteed.)

DIMENSIONS

Three point Internal Micrometers

Range L2 L1
12 – 16, 16 – 20 82 126 – 130
20 – 25, 25 – 30 94 137 – 142
30 – 40, 40 – 50 102 145 – 155
50 – 63, 62 – 75, 75 – 88, 87 – 100 105 150 – 163

100 – 125, 125 – 150, 150 – 175, 175 – 200

200 – 225, 225 – 250, 250 – 275, 275 – 300

161 227 – 252

Non-Interchangeable-Head Sets

Metric

Order No. Range* Graduation Content of Set

 

 

368-991

 

 

12 – 20mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.005mm

Micrometer head unit 12 – 16mm

16 – 20mm

Setting ring (ø16) Extension rod (150mm) Spanner

Hex wrench

1 pc

1 pc

1 pc

1 pc

2 pcs

1 pc

 

 

 

368-992

 

 

 

20 – 50mm

Micrometer head unit 20 – 25mm

25 – 30mm

30 – 40mm

40 – 50mm

Setting ring (ø25, ø40) Extension rod (150mm) Spanner

Hex wrench

 

1 pc

1 pc

1 pc

1 pc

1 pc each

1 pc

2 pcs

1 pc

 

 

 

368-993

 

 

 

50 – 100mm

Micrometer head unit

50 – 63mm                  1 pc

62 – 75mm                  1 pc

75 – 88mm                  1 pc

87 – 100mm                  1 pc Setting ring (ø62, ø87) 1 pc each Extension rod (150mm) 1 pc Spanner                       2 pcs

Hex wrench                    1 pc

 

 

 

368-994

 

 

 

100 – 200mm

Micrometer head unit 100 – 125mm

125 – 150mm

150 – 175mm

175 – 200mm

Setting ring(ø125, ø175) Extension rod (150mm) Spanner

Hex wrench

 

1 pc

1 pc

1 pc

1 pc

1 pc each

1 pc

2  pcs

1 pc

Inch

Order No. Range* Graduation Content of Set

 

 

368-995

 

 

.5″ – .8″

 

 

 

 

 

 

 

 

 

 

 

 

 

 

.0002″

Micrometer head unit

.5-.65″                         1 pc

.65-.8″                         1 pc

Setting ring (.65″ DIA.) 1 pc Extension rod (150mm) 1 pc Spanner                       2 pcs

Hex wrench                    1 pc

 

 

 

368-996

 

 

 

.8″ – 2″

Micrometer head unit

.8-1″                          1 pc

1-1.2″                        1 pc

1.2-1.6″                       1 pc

1.6-2″                        1 pc

Setting ring              1 pc each (1″ DIA., 1.6″ DIA.)

Extension rod (150mm)      1 pc Spanner                       2 pcs

Hex wrench                    1 pc

 

 

 

368-997

 

 

 

2″ – 4″

Micrometer head unit

2-2.5″                        1 pc

2.5-3″                        1 pc

3-3.5″                        1 pc

3.5-4″                        1 pc

Setting ring              1 pc each (2.5″ DIA., 3.5″ DIA.)

Extension rod (150mm)      1 pc Spanner                       2 pcs

Hex wrench                    1 pc

 

 

 

368-998

 

 

 

4″ – 8″

Micrometer head unit

4-5″                           1 pc

5-6″                           1 pc

6-7″                           1 pc

7-8″                           1 pc

Setting ring                1 pc each (5″ DIA., 7″ DIA.)

Extension rod (150mm)      1 pc Spanner                       2 pcs

Hex wrench                    1 pc

* It is not advisable to use measuring heads other than as supplied as a standard accessory, or widen a measuring range by using any other multiple sub-measuring heads. (The measuring accuracy in such cases is not guaranteed.)

Three point Internal Micrometers

For details of Special-order Products, refer to page C-49.