Mitutoyo 345-350-30 Digital Inside Microm. Caliper Type Inch/Metric, 0,2-1,2"
Part Number: Mitutoyo 345-350-30
The Mitutoyo 345-350-30 Digimatic inside micrometer measures small bores, grooves and internal widths from 0.2"–1.2" (5.08–30.48 mm). Its caliper-type jaws reach short internal features, while the digital readout provides a clear 0.00005" / 0.001 mm resolution measurement.
Carbide measuring faces provide wear resistance, while the constant measuring-force device helps deliver repeatable results between operators. Inch/Metric switching supports different measurement standards, and the Digimatic data output allows readings to be transferred to data loggers or SPC software.
Typical applications include groove widths, short bores, internal shoulders and slot widths. Before measuring, set the micrometer using an appropriate inside-length standard such as a setting ring or optional Inside Micro Checker. For precision measurements in Kuwait, allow the instrument and workpiece to reach the same temperature before taking the final reading.
For a larger measurement range, the Mitutoyo 345-351-30 covers 1"–2". The mechanical Mitutoyo 145-193 is an alternative for the same range as this model.
Key Benefits
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Reaches short features — caliper-type jaws measure short bores, grooves and slots.
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Digital readout — 0.00005" / 0.001 mm resolution without mechanical scale reading.
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Constant measuring force — helps provide consistent measurements between operators.
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Carbide measuring faces — provide long-term wear resistance.
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SPC-ready — Digimatic data output supports quality records and data logging.
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Inch/Metric switching — supports both drawing and measurement standards.
Ready to order the Mitutoyo 345-350-30? Call or WhatsApp +965 9807 4888 for a fast quote.
Who This Product Is Best For
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QC inspectors checking groove widths and short internal bores.
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Machinists holding tolerances on 0.2"–1.2" internal features.
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Maintenance teams in oil and gas maintenance workshops.
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Laboratories logging inside measurements to SPC software.
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Buyers upgrading from mechanical inside micrometers to a Digimatic model.
How to Use
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Set the zero using a suitable setting ring or Inside Micro Checker within the required range.
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Insert the caliper-type jaws into the bore, groove or internal feature.
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Rock the micrometer gently to locate the maximum reading.
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Allow the constant-force device to apply the measuring pressure, then read the display.
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Send the measurement to a compatible data logger if required.
Frequently Asked Questions
What range does the Mitutoyo 345-350-30 Digimatic inside micrometer measure?
It measures internal features from 0.2"–1.2" (5.08–30.48 mm).
Is a setting ring included?
No. An inside-length standard such as a setting ring or Inside Micro Checker is optional and is used to set the micrometer before measuring.
What are the measuring faces made of?
The measuring faces are made of carbide for wear resistance and long service life.
Does it have data output?
Yes. The Digimatic data output can connect to compatible Mitutoyo data loggers and SPC software.
Which model should I choose if my part is outside the 0.2"–1.2" range?
Choose a model whose measuring range brackets the required internal dimension. The 345-350-30 covers 0.2"–1.2", while the Mitutoyo 345-351-30 covers 1"–2".
Can the Mitutoyo 345-350-30 be recalibrated?
Yes. The micrometer can be periodically recalibrated through an ISO/IEC 17025-accredited calibration service to maintain measurement traceability.
How should I store and care for it?
Clean the measuring faces after use, store the instrument in its case away from direct sunlight and coolant, and avoid dropping it. Check the zero before use and schedule periodic calibration to maintain traceability.
How do I order the Mitutoyo 345-350-30 Digimatic inside micrometer in Kuwait?
Pricing is quote-based. Call or WhatsApp +965 9807 4888 with the model number and quantity for price and availability.
For pricing, availability or to place an order, call or WhatsApp +965 9807 4888.
