Mitutoyo 293-678-20 | Digital Absolute Micrometer QuickMike | Inch/Metric, Range 2 - 3.2" (50.8 - 81.28 mm)

Part Number: Mitutoyo 293-678-20

The Mitutoyo 293-678-20 QuickMike micrometer moves its spindle 10 mm per turn, making it much faster to switch between part sizes across 2"–3.2" (50.8–81.28 mm). Its ABSOLUTE digital readout and IP65 protection make it suitable for busy machine shops and inspection environments. Request a quote in under a minute: call or WhatsApp +965 9807 4888.

On a standard micrometer, the spindle advances 0.5 mm per turn, requiring many turns when moving between different measurement sizes. The Mitutoyo 293-678-20 QuickMike advances 10 mm per revolution across its 30 mm working range of 2"–3.2" (50.8–81.28 mm).

This faster spindle movement is useful in high-mix inspection environments where operators measure several different diameters in succession. The non-rotating spindle contacts the workpiece without twisting, while the ABSOLUTE linear encoder provides 0.00005" / 0.001 mm resolution without requiring origin resetting at power-on.

With IP65 protection against dust and coolant, the micrometer is designed for practical shop-floor use. It is suitable for CNC machine shops, oil and gas maintenance workshops, refinery and petrochemical shutdown teams, and quality-control departments across Kuwait.

Temperature can affect dimensional measurements. Steel expands by approximately 11.5 μm per metre for every 1 °C change. Allow the workpiece and micrometer to reach the same temperature before taking a final precision measurement.

For larger parts, consider the Mitutoyo 293-679-20 for 3"–4.2". For a metric-only range, compare the Mitutoyo 293-668-20.

Key Benefits

• 10 mm per turn — twenty times the spindle travel of a standard 0.5 mm-pitch micrometer

• Faster changeovers — move from one part size to another in fewer thimble turns

• IP65 protection — resistance to dust and coolant for shop-floor environments

• ABSOLUTE encoder — 0.00005" / 0.001 mm resolution without origin reset at power-on

• Non-rotating spindle — helps prevent twisting or scuffing of finished surfaces

• Long battery life — approximately 5 years under normal use

Ready to order the Mitutoyo 293-678-20? Call or WhatsApp +965 9807 4888 for a fast quote.

Who This Product Is Best For

• High-mix CNC machine shops measuring different diameters throughout a shift

• In-process inspection at machines where coolant and dust are present

• Maintenance teams checking shafts, pins and other precision components

• QC departments looking to improve measurement throughput

• Buyers upgrading from standard 0.5 mm-pitch digital micrometers

How to Use

1. Open the spindle quickly using the few-turn QuickMike mechanism.

2. Check the zero position using the anvil or supplied setting standard.

3. Position the measuring faces around the workpiece.

4. Close the spindle onto the part using the ratchet for consistent measuring force.

5. Read the measurement from the ABSOLUTE digital display or transfer the data to an SPC system when required.

6. For final precision measurements, allow the micrometer and workpiece to stabilize at the same temperature.

Frequently Asked Questions

What range does the Mitutoyo 293-678-20 QuickMike measure?

It measures 2"–3.2" (50.8–81.28 mm), providing a 30 mm working range.

What makes the QuickMike faster than a standard micrometer?

Its spindle advances 10 mm per revolution instead of approximately 0.5 mm per revolution on a standard micrometer, significantly reducing the number of turns required when changing measurement sizes.

Is the Mitutoyo 293-678-20 suitable for shop-floor use?

Yes. It has IP65 protection against dust and coolant, along with a non-rotating spindle and carbide-tipped measuring faces.

How long does the battery last?

Battery life is approximately 5 years under normal use.

Which QuickMike should I choose if my part is outside the 2"–3.2" range?

Select a QuickMike with a measuring range that covers your required part size. The Mitutoyo 293-677-20 covers 1"–2.2", while the Mitutoyo 293-679-20 covers 3"–4.2". The Mitutoyo 293-668-20 is a metric-range option.

Can the Mitutoyo 293-678-20 be recalibrated?

Yes. The micrometer can be periodically recalibrated through an ISO/IEC 17025-accredited calibration service to maintain measurement traceability.

How do I order the Mitutoyo 293-678-20 QuickMike in Kuwait?

Pricing is quote-based. Call or WhatsApp +965 9807 4888 to confirm price and availability.

For pricing, availability or to place an order, call or WhatsApp +965 9807 4888.