C-7CMitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.• Titanium-coated measuring pins on the three-point type (over 6 mm range models) provide excellent durability and impact resistance.• Three-point bore micrometer with measuring range 6 mm or longer allows stable measurement through automatic centering.• Measurement can be made close to the bottom of a blind hole.• Deep holes can be measured by attaching an Extension Rod (optional) which is available on models over 6 mm (0.275 in) measuring range.• Constant-force device allows repeatable measurement, regardless of operator's skill.• For details of Setting Rings, refer to page C-47.HoltestSERIES 368 — Three-point/Two-point Internal Micrometers368-001(Two-point contact model)368-174368-170368-168L3L4L5Range(mm)L3(mm)L4(mm)L5(mm)2 - 6——26 - 122 or below—2.512 - 200.3 or below5.63.520 - 308.35.230 - 5013.010.050 - 10017.014.0100 - 30012.4 or below21.013.8HoltestFor easy and accurate measurement of inside diametersAn inspection certicate is supplied as standard. Refer to page U-9 for details.For details of Special-order Products, refer to page C-49. Typical application using an extension rod

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