Series 368 - Mechanical Holtest Three-Point/Two-Point Internal Micrometers

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Series 368 - Mechanical Holtest Three-Point/Two-Point Internal Micrometers

Series 368 - Mechanical Holtest Three-Point/Two-Point Internal Micrometers

Series 368 - Mechanical Holtest Three-Point/Two-Point Internal Micrometers

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Specification: 368-001

Features & Benefits

The Mitutoyo mechanical Holtest internal micrometer features three hardened-steel anvils evenly spaced at 120° for true alignment of the axis bore for accurate, easily repeatable measurements. Contact points are coated with Titanium Nitride (TiN)* for added durability and precision. The holtest’s ratchet stop mechanism provides a constant measuring force on the hardened-steel spindle to ensure accurate, even measurements.

  • Available in Metric and Inch models
  • Optional extension rod allows for measuring deep holes
  • Optional setting rings for zero point adjustment are available
  • Scale on thimble and sleeve is laser etched for easier reading in all conditions
  • Holtests up to 100mm / 4″ diameter measurements supplied in a fitted plastic case
  • Holtests over 100mm / 4″ diameter measurements supplied in a wooden case

* Models under 5-6mm / .24-.28″ are carbide

SERIES 526 Technical Data

Technology: Mechanical
Ratchet/Thimble: Ratchet Stop

Product List

Order No. Units Range Graduation Accuracy Mass Contact Point Measuring Method Extension Rod (Optional)
368-001 Metric 2 - 2.5mm 0.001mm ±2µm 88g Carbide Two-Point method -
368-002 Metric 2.5 - 3mm 0.001mm ±2µm 88g Carbide Two-Point method -
368-003 Metric 3 - 4mm 0.001mm ±2µm 91g Carbide Two-Point method -
368-004 Metric 4 - 5mm 0.001mm ±2µm 91g Carbide Two-Point method -
368-005 Metric 5 - 6mm 0.001mm ±2µm 91g Carbide Two-Point method -
368-021 Inch 0.08-0.1" 0.0001" ±0.0001" 88g Carbide Two-Point method -
368-022 Inch 0.1-0.12" 0.0001" ±0.0001" 88g Carbide Two-Point method -
368-023 Inch 0.12-0.16" 0.0001" ±0.0001" 91g Carbide Two-Point method -
368-024 Inch 0.16-0.2" 0.0001" ±0.0001" 91g Carbide Two-Point method -
368-025 Inch 0.2-0.24" 0.0001" ±0.0001" 91g Carbide Two-Point method -
368-026 Inch 0.24-0.28" 0.0001" ±0.0001" 91g Carbide Two-Point method -
368-161 Metric 6 - 8mm 0.001mm ±3µm 57g TiN coating Three-point method 952322
368-162 Metric 8 - 10mm 0.001mm ±3µm 58g TiN coating Three-point method 952322
368-163 Metric 10 - 12mm 0.001mm ±3µm 59g TiN coating Three-point method 952322
368-164 Metric 12 - 16mm 0.005mm ±3µm 140g TiN coating Three-point method 952621
368-165 Metric 16 - 20mm 0.005mm ±3µm 145g TiN coating Three-point method 952621
368-166 Metric 20 - 25mm 0.005mm ±3µm 250g TiN coating Three-point method 962622
368-167 Metric 25 - 30mm 0.005mm ±3µm 270g TiN coating Three-point method 962622
368-168 Metric 30 - 40mm 0.005mm ±3µm 290g TiN coating Three-point method 962622
368-169 Metric 40 - 50mm 0.005mm ±3µm 330g TiN coating Three-point method 962622
368-170 Metric 50 - 63mm 0.005mm ±3µm 440g TiN coating Three-point method 952623
368-171 Metric 62 - 75mm 0.005mm ±4µm 450g TiN coating Three-point method 952623
368-172 Metric 75 - 88mm 0.005mm ±4µm 490g TiN coating Three-point method 952623
368-173 Metric 87 - 100mm 0.005mm ±4µm 500g TiN coating Three-point method 952623
368-174 Metric 100 - 125mm 0.005mm ±5µm 1050g TiN coating Three-point method 952623
368-175 Metric 125 - 150mm 0.005mm ±5µm 1120g TiN coating Three-point method 952623
368-176 Metric 150 - 175mm 0.005mm ±5µm 1190g TiN coating Three-point method 952623
368-177 Metric 175 - 200mm 0.005mm ±5µm 1260g TiN coating Three-point method 952623
368-178 Metric 200 - 225mm 0.005mm ±6µm 1420g TiN coating Three-point method 952623
368-179 Metric 225 - 250mm 0.005mm ±6µm 1580g TiN coating Three-point method 952623
368-180 Metric 250 - 275mm 0.005mm ±6µm 1600g TiN coating Three-point method 952623
368-181 Metric 275 - 300mm 0.005mm ±6µm 1690g TiN coating Three-point method 952623
368-261 Inch 0.275-0.35" 0.0001" ±0.0001" 57g TiN coating Three-point method 952322
368-262 Inch 0.35-0.425" 0.0001" ±0.0001" 58g TiN coating Three-point method 952322
368-263 Inch 0.425-0.5" 0.0001" ±0.0001" 59g TiN coating Three-point method 952322
368-264 Inch 0.5-0.65" 0.0002" ±0.00015" 140g TiN coating Three-point method 952621
368-265 Inch 0.65-0.8" 0.0002" ±0.00015" 145g TiN coating Three-point method 952621
368-266 Inch 0.8-1" 0.0002" ±0.00015" 250g TiN coating Three-point method 962622
368-267 Inch 1-1.2" 0.0002" ±0.00015" 270g TiN coating Three-point method 962622
368-268 Inch 1.2-1.6" 0.0002" ±0.00015" 290g TiN coating Three-point method 962622
368-269 Inch 1.6-2" 0.0002" ±0.00015" 330g TiN coating Three-point method 962622
368-270 Inch 2-2.5" 0.0002" ±0.00015" 440g TiN coating Three-point method 952623

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.