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Mitutoyo 368-273 Holetest 3.5 - 4" Carbide,TN

Mitutoyo 368 Series Holtest Bore Gage

by Mitutoyo
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Call / Text 617-398-7852 Email support@precisionengineeringsupply.com
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$1,950.00
  • Measures internal diameters from 0.08" to 12"
  • Self-centering 3-point contact
  • Mechanical design
  • Ideal for blind and short bore measurement
  • High accuracy
Customers rate us 4.5/5 based on 49 reviews.

Mitutoyo 368 Series Holtest Bore Gage

$1,950.00

Description

Mitutoyo 368 Series Holtest Bore Gage

The Mitutoyo 368 Holtest Series (Inch) provides precise, repeatable internal diameter measurements using a proven self-centering 3-point measuring system. Designed for accuracy and durability, these mechanical Holtest gages deliver stable results even in short or blind bores. With a comprehensive measuring range from 0.08 in to 12 in, the 368 Series supports inspection, setup, and quality control across machining, aerospace, automotive, and general manufacturing applications.

 

Key Features

  • Inch measuring range from 0.08" to 12"
  • Self-centering 3-point contact for consistent bore measurement
  • Mechanical operation - no batteries or electronics
  • High accuracy across small and large diameter ranges
  • Ideal for blind and short bores
  • Rugged construction for shop-floor reliability

 

Specifications

Inch SKU Number Inch Range Accuracy Extension Rod
368-021 0.08 in - 0.1 in ±2μm (max diff. 2μm)
±0.0001 in (max diff. 0.0001 in) 		-
368-022 0.1 in - 0.12 in
368-023 0.12 in - 0.16 in
368-024 0.16 in - 0.2 in
368-025 0.2 in - 0.24 in
368-026 0.24 in - 0.28 in
368-261 0.275 in - 0.35 in
368-262 0.35 in - 0.425 in 100mm (952322)
368-263 0.425 in - 0.5 in
368-264 0.5 in - 0.65 in ±3μm (max diff. 3μm)
±0.00015 in (max diff. 0.00015 in) 		150mm (952621)
368-265 0.65 in - 0.8 in
368-266 0.8 in - 1 in 150mm (952622)
368-267 1 in - 1.2 in
368-268 1.2 in - 1.6 in
368-269 1.6 in - 2 in
368-270 2 in - 2.5 in 150mm (952623)
368-271 2.5 in - 3 in ±4μm (max diff. 4μm)
±0.0002 in (max diff. 0.0002 in)
368-272 3 in - 3.5 in
368-273 3.5 in - 4 in
368-274 4 in - 5 in ±5μm (max diff. 5μm)
±0.00025 in (max diff. 0.00025 in)
368-275 5 in - 6 in
368-276 6 in - 7 in
368-277 7 in - 8 in
368-278 8 in - 9 in ±6μm (max diff. 6μm)
±0.0003 in (max diff. 0.0003 in)
368-279 9 in - 10 in
368-280 10 in - 11 in
368-281 11 in - 12 in

 

Items Included

  • Mitutoyo 368 Holtest (selected model)
  • Measuring head assembly
  • Extension rod (Sold Separately)
  • Manufacturer documentation

 

INSIZE ISHW-L20B Webster Hardness Tester ManualMitutoyo 368 Holtest Series Catalog

Shipping

Shipping is FAST & FREE on all orders shipped to the continental USA.

Why Buy From Us

Shipping is FAST & FREE on all orders shipped to the continental USA.

Best Price Guarantee. 

30 Day Easy Returns. 

Se Habla Español - Falamos Português

Pricing

We will beat ANY price found online! Reach out to us for more information by calling at (617) 398-7852 or emailing us at support@precisionengineeringsupply.com.

Returns

Easy 30 day returns! We pride ourselves in helping you with your needs Please reach out by calling at (617) 398-7852 or emailing us at support@precisionengineeringsupply.com to start your return.

Financing

Pay monthly with Affirm or get net terms with Approve

Customers are saying

4.51 ★ (49)
Verified
Have a question?

Call or Text Gustavo Before You Buy!

Every order gets my personal attention. Call before you buy and I'll make sure it's the right fit and the right price!

(617) 398-7852 support@precisionengineeringsupply.com
Gustavo
Founder and CEO
Available Mon – Fri
Description

Mitutoyo 368 Series Holtest Bore Gage

The Mitutoyo 368 Holtest Series (Inch) provides precise, repeatable internal diameter measurements using a proven self-centering 3-point measuring system. Designed for accuracy and durability, these mechanical Holtest gages deliver stable results even in short or blind bores. With a comprehensive measuring range from 0.08 in to 12 in, the 368 Series supports inspection, setup, and quality control across machining, aerospace, automotive, and general manufacturing applications.

 

Key Features

  • Inch measuring range from 0.08" to 12"
  • Self-centering 3-point contact for consistent bore measurement
  • Mechanical operation - no batteries or electronics
  • High accuracy across small and large diameter ranges
  • Ideal for blind and short bores
  • Rugged construction for shop-floor reliability

 

Specifications

Inch SKU Number Inch Range Accuracy Extension Rod
368-021 0.08 in - 0.1 in ±2μm (max diff. 2μm)
±0.0001 in (max diff. 0.0001 in) 		-
368-022 0.1 in - 0.12 in
368-023 0.12 in - 0.16 in
368-024 0.16 in - 0.2 in
368-025 0.2 in - 0.24 in
368-026 0.24 in - 0.28 in
368-261 0.275 in - 0.35 in
368-262 0.35 in - 0.425 in 100mm (952322)
368-263 0.425 in - 0.5 in
368-264 0.5 in - 0.65 in ±3μm (max diff. 3μm)
±0.00015 in (max diff. 0.00015 in) 		150mm (952621)
368-265 0.65 in - 0.8 in
368-266 0.8 in - 1 in 150mm (952622)
368-267 1 in - 1.2 in
368-268 1.2 in - 1.6 in
368-269 1.6 in - 2 in
368-270 2 in - 2.5 in 150mm (952623)
368-271 2.5 in - 3 in ±4μm (max diff. 4μm)
±0.0002 in (max diff. 0.0002 in)
368-272 3 in - 3.5 in
368-273 3.5 in - 4 in
368-274 4 in - 5 in ±5μm (max diff. 5μm)
±0.00025 in (max diff. 0.00025 in)
368-275 5 in - 6 in
368-276 6 in - 7 in
368-277 7 in - 8 in
368-278 8 in - 9 in ±6μm (max diff. 6μm)
±0.0003 in (max diff. 0.0003 in)
368-279 9 in - 10 in
368-280 10 in - 11 in
368-281 11 in - 12 in

 

Items Included

  • Mitutoyo 368 Holtest (selected model)
  • Measuring head assembly
  • Extension rod (Sold Separately)
  • Manufacturer documentation

 

INSIZE ISHW-L20B Webster Hardness Tester ManualMitutoyo 368 Holtest Series Catalog

Shipping

Shipping is FAST & FREE on all orders shipped to the continental USA.

Why Buy From Us

Shipping is FAST & FREE on all orders shipped to the continental USA.

Best Price Guarantee. 

30 Day Easy Returns. 

Se Habla Español - Falamos Português

Pricing

We will beat ANY price found online! Reach out to us for more information by calling at (617) 398-7852 or emailing us at support@precisionengineeringsupply.com.

Returns

Easy 30 day returns! We pride ourselves in helping you with your needs Please reach out by calling at (617) 398-7852 or emailing us at support@precisionengineeringsupply.com to start your return.

Financing

Pay monthly with Affirm or get net terms with Approve