Holtest
Digimatic Holtest SERIES 468 — Three-point Bore Micrometers
Measurement example
• These three-point bore Digimatic micrometers for inside measurement are suitable for highly accurate measurements. • Can measure deep holes using an extension rod (optional). • Can measure close to the bottom of a blind hole. • Titanium-coated measuring pins provide excellent durability and impact resistance. • Two values can be preset as a reference point, allowing you to store multiple measured values of setting rings and to quickly prepare for measurement.
Reference dimensions when measuring a blind hole
C
Range (mm)
L 3 (mm) 2 or below
L 4 (mm)
L 5 (mm)
468-261
468-268
468-274
6 - 12
— 2.5 5.6 3.5 8.3 5.2 13.0 10.0 17.0 14.0 21.0 13.8
SPECIFICATIONS Inch/Metric Order No. Range (in)
12 - 20 20 - 30 30 - 50 50 - 100 100 - 300
0.3 or below
Metric Order No. 468-161 468-162 468-163 468-164 468-165 468-166 468-167 468-168 468-169 468-170 468-171 468-172
Extension Rod (optional) 952322 (100 mm) 952621 (150 mm)
Extension Rod (optional) 952322 (100 mm) 952621 (150 mm)
Resolution (mm)
Range (mm)
Accuracy (µm)
Accuracy (in)
Resolution
12.4 or below
468-261 0.275 - 0.35 468-262 0.35 - 0.425 468-263 0.425 - 0.5 468-264 0.5 - 0.65 468-265 0.65 - 0.8 468-266 0.8 - 1
6 - 8
8 - 10 10 - 12 12 - 16 16 - 20 20 - 25 25 - 30 30 - 40 40 - 50 50 - 63 62 - 75 75 - 88
±2
±0.0001
Functions Zero-setting Origin restoration Data hold
2-point preset Function lock inch/mm readout (inch/mm type) Automatic power ON/OFF
0.00005 in/ 0.001 mm
468-267 468-268 468-269 468-270 468-271 468-272 468-273 468-274 468-275 468-276 468-277 468-278 468-279 468-280 468-281
±3
1 - 1.2
±0.00015
952622 (150 mm)
952622 (150 mm)
1.2 - 1.6
1.6 - 2
2 - 2.5
Error alarm Data output
0.001
2.5 - 3
±4
3 - 3.5
±0.0002
468-173 87 - 100 468-174 100 - 125 468-175 125 - 150 468-176 150 - 175 468-177 175 - 200 468-178 200 - 225
3.5 - 4
Optional Accessories Order No. Type
4 - 5 5 - 6 6 - 7 7 - 8 8 - 9
description
952623 (150 mm)
952623 (150 mm)
±5
±0.00025
USB Input Tool Series USB Keyboard Signal Conversion Type IT-020U
264-020
—
0.0001 in/ 0.001 mm
05CZA662 05CZA663 06AFM380B
±0.0003 468-179 225 - 250 468-180 250 - 275 468-181 275 - 300 • Power source: SR44 battery (1 pc.), 938882 included as standard (for operational checks) • Battery life: Approx. 1.2 years under normal use Note: Setting rings are optional. 9 - 10 10 - 11 11 - 12
B Connection cable (1 m) B Connection cable (2 m) B USB Input Tool Direct (2 m)
±6
02AZD730 * IP67 U-WAVE-T 02AZD880 * Buzzer U-WAVE-T 02AZD790B B
Connection cable for U-WAVE-T (160 mm) Connection cable for U-WAVE-T For foot switch
02AZE140B
B
DIMENSIONS
Unit: mm
Mounting bracket (optional) Bracket/plate that allows 468 series to be mounted in micrometer stands: 04AZB157
Range
L 2 *
L 1
6 - 8, 8 - 10, 10 - 12 mm
59 175 - 177 84 197 - 201 93 206 - 211 103 214 - 224 105 219 - 232
12 - 16, 16 - 20 mm 20 - 25, 25 - 30 mm
30 - 40, 40 - 50 mm 50 - 63, 62 - 75, 75 - 88, 87 - 100 mm 100 - 125, 125 - 150, 150 - 175, 175 - 200, 200 - 225, 225 - 250, 250 - 275, 275 - 300 mm
L 2
L 1
151 286 - 311
For special-order products, contact Mitutoyo America
* L 2 is maximum depth of measurement possible. Note: External view differs depending on measurement range.
C-3
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