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

Mitutoyo 368 Series Holtest Bore Gage

by Mitutoyo
$1,950.00
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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)
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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