Product Overview

The Mitutoyo 293-240-30 is a 0–25mm digital outside micrometer from the QuantuMike series — one of Mitutoyo’s most refined bench micrometers for precision work where speed and accuracy need to coexist. With a fast-feed thimble mechanism, IP65 coolant-proof rating, and a 0.001mm resolution digital readout, this is a toolroom-grade instrument that earns its place next to your surface plate or beside the spindle of a CNC lathe. Whether you’re checking turned diameters to the thou, qualifying stock before a grinding pass, or doing first-off inspection on a batch of precision shafts, the 293-240-30 delivers repeatable, traceable readings without the ambiguity of a vernier line.

0.001mm resolution digital readout with IP65 protection — The LCD display eliminates parallax error and interpolation guesswork that comes with analogue thimbles. IP65 coolant-proof sealing means you can use this instrument at the machine in a flood-coolant environment without babying it — a meaningful real-world advantage over standard digital micrometers that fail quickly in wet shop conditions.
Fast-feed thimble mechanism (QuantuMike) — The QuantuMike’s rapid advance mechanism lets you spin the thimble down to the work much faster than a conventional micrometer without sacrificing feel at the measuring face. On production work or repeat checking of multiple parts, this cuts cycle time at the gauge station and reduces operator fatigue over a long shift.
Hardened and ground carbide-tipped anvil and spindle faces — Both measuring faces are carbide-tipped and lapped flat, giving the instrument long service life under daily use. The ground reference surfaces are what underpin repeatable, accurate measurements — this is not a cost-reduced instrument with painted or plated faces.
SR44SW battery included; Origin/Zero/Hold functions — The ORIGIN function allows the micrometer to be zeroed at any point in the range, useful when checking wall thickness or step dimensions. The HOLD function freezes the display — handy when measuring in restricted access or at awkward angles where you can’t see the display at the point of measurement.
Ideal for — first-off and in-process inspection of turned and ground components, qualifying bar stock and ground shafting before setup, checking micrometer-critical fits (bearing journals, gear bores, bushings), QC inspection on CNC lathe and mill work, and toolroom gauge-bench duties where a calibration certificate is required for traceability.

Condition

New (Factory Sealed)

This micrometer is brand new and factory sealed in the original Mitutoyo packaging. The measuring faces, thimble, sleeve, and frame are in pristine, unissued condition — no contact marks on the anvil or spindle, no wear on the thimble knurl, and no handling patina on the frame. The instrument has not been used, set up, or zeroed prior to this sale. A Mitutoyo Certificate of Inspection is included confirming the unit has passed factory calibration and is traceable to national measurement standards (NIST/JCSS). As with any precision instrument — new or used — it is good shop practice to verify zero against a known reference (a calibrated 25mm gauge block or setting standard) before putting it to work, particularly if the unit has been in transit. The certificate documents factory-measured errors at multiple points across the range, so you have a documented baseline from the outset.

Included:

1 x Mitutoyo QuantuMike Digital Outside Micrometer, 0–25mm, 0.001mm resolution (Model 293-240-30)
1 x Original Mitutoyo fitted carry case
1 x Certificate of Inspection / factory calibration documentation
1 x SR44SW battery (installed)
1 x Spanner wrench / standard accessories as supplied by Mitutoyo
1 x Instruction manual / documentation pack

Not included: No setting standard or gauge block — if traceable zero verification is required for your QMS, a 25mm gauge block or setting rod should be sourced separately.

Brand Information

Mitutoyo Corporation is Japan’s largest manufacturer of precision measuring instruments and is widely regarded as the global benchmark in metrology tooling — sitting at the top of the market alongside Mahr, Tesa, and Starrett for instrument quality, calibration traceability, and long-term parts and service support. Founded in 1934 and headquartered in Kawasaki, Japan, Mitutoyo manufactures the full spectrum of dimensional metrology equipment from vernier callipers to CMMs, and their instruments are the de facto standard on toolroom benches, aerospace inspection floors, and precision manufacturing cells worldwide. For Australian machinists and quality engineers, Mitutoyo instruments carry strong resale value, readily available calibration support through local agents, and a reputation for holding specification across decades of working life.

Specifications

Feature	Specification
Brand	Mitutoyo
Model	293-240-30
Series	QuantuMike (Series 293)
Type	Digital Outside Micrometer
Measuring Range	0–25mm
Resolution	0.001mm
Accuracy	±0.001mm
Repeatability	0.001mm
IP Rating	IP65 (coolant proof)
Display	LCD digital readout
Functions	ORIGIN, ZERO/ABS, HOLD
Measuring Faces	Carbide-tipped, lapped flat
Frame Material	Heat-insulated frame (minimises thermal transfer from hand)
Battery	SR44SW, 1.55V (included)
Country of Origin	Japan
Condition	New (Factory Sealed)
Included Items	Micrometer, fitted case, Certificate of Inspection, SR44SW battery, spanner wrench, manual/documentation
Not Included	25mm gauge block / setting standard

Keywords

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Mitutoyo 0-25mm Digital Micrometer 293-240-30

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