• Mitutoyo 139-177 Internal Micrometer (Extension Pipe)
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Mitutoyo 139-177 Internal Micrometer (Extension Pipe)

Mitutoyo 139-177 Internal Micrometer (Extension Pipe)

Mitutoyo 139-177 Internal Micrometer with Extension Pipe is a precision bore-measuring instrument designed for accurate internal diameter measurement, sourced direct from Korea.

Key features

  • Internal micrometers with extension pipes are commonly used in machining, toolroom, and quality control environments where deep bores, cylinders, and housings need reliable dimensional verification
402-4372 139-177 (100-2100) | Measurement Range: 100~2/100 | Extension Rod: 25/50/100/200/400(4 pieces)
402-6680 139-001 (100-125) | Measurement Range: 100~125 | Extension Rod: -
402-6699 139-173 (100-500) | Measurement Range: 100~500 | Extension Rod: 25/50/100/200
402-6705 139-174 (100-900) | Measurement Range: 100~900 | Extension Rod: 25/50/100/200/400
402-6714 139-175 (100-1300) | Measurement Range: 100~1/300 | Extension Rod: 25/50/100/200/400(2pcs)
402-6723 139-176 (100-1700) | Measurement Range: 100~1,700 | Extension Rod: 25/50/100/200/400(3 pcs)
402-6732 140-157 (1000-2000) | Measurement Range: 1/000~2/000 | Extension Rod: 50/100(2pcs)/200/500
402-6741 140-158 (1000-3000) | Measurement Range: 1,000~3,000 | Extension Rod: 50/100(2pcs)/200/500/1000
402-6750 140-159 (1000-4000) | Measurement Range: 1,000~4,000 | Extension Rod: 50/100(2 pcs)/200/500/1000(2 pcs)
402-6769 140-160 (1000-5000) | Measurement Range: 1/000~5/000 | Extension Rod: 50/100(2pc)/200/500/1000(3pc)
Measuring InstrumentsMitutoyo
10 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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Mitutoyo 139-177 Internal Micrometer (Extension Pipe)

Brand Mitutoyo·Measuring Instruments

Available part numbers (10)

402-4372, 402-6680, 402-6699, 402-6705, 402-6714, 402-6723, 402-6732, 402-6741, 402-6750, 402-6769

How to order

Send the Mitutoyo part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codes & specifications
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Product codeSpec
402-4372139-177 (100-2100) | Measurement Range: 100~2/100 | Extension Rod: 25/50/100/200/400(4 pieces)
402-6680139-001 (100-125) | Measurement Range: 100~125 | Extension Rod: -
402-6699139-173 (100-500) | Measurement Range: 100~500 | Extension Rod: 25/50/100/200
402-6705139-174 (100-900) | Measurement Range: 100~900 | Extension Rod: 25/50/100/200/400
402-6714139-175 (100-1300) | Measurement Range: 100~1/300 | Extension Rod: 25/50/100/200/400(2pcs)
402-6723139-176 (100-1700) | Measurement Range: 100~1,700 | Extension Rod: 25/50/100/200/400(3 pcs)
402-6732140-157 (1000-2000) | Measurement Range: 1/000~2/000 | Extension Rod: 50/100(2pcs)/200/500
402-6741140-158 (1000-3000) | Measurement Range: 1,000~3,000 | Extension Rod: 50/100(2pcs)/200/500/1000
402-6750140-159 (1000-4000) | Measurement Range: 1,000~4,000 | Extension Rod: 50/100(2 pcs)/200/500/1000(2 pcs)
402-6769140-160 (1000-5000) | Measurement Range: 1/000~5/000 | Extension Rod: 50/100(2pc)/200/500/1000(3pc)

Need a different model, or a part not listed here? Send us your parts list →

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