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Outside Micrometers – with Interchangeable Anvils

The Mitutoyo Digimatic outside digital micrometer features a ratchet stop function and interchangeable anvils for measuring a wide range of workpiece sizes and material types.

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Features & Benefits

The Mitutoyo digital ratchet stop outside micrometer is ideal for measuring metal and non-metal workpieces by controlling the amount of spindle force. A ratchet-stop mechanism provides uniform pressure on a workpiece for precise, repeatable measurements. Interchangeable anvils allow for measuring a wide range of workpiece sizes.  Measurements are displayed on a coolant-proof, easy-to-read LCD readout.

  • Ratchet mechanism provides an audible click to ensure measurement is being performed at a constant pre-set force
  • SPC output function allows for quick and easy data management in real time
  • Zero-setting standards bar for each range is included
  • Functions include Origin Set, Zero/ABS, Hold, Function Lock, Data Output, and inch/mm conversion (on inch/metric models only)
  • Alarm: Low Voltage, Counting Value Composition Error
  • Zero-setting standards bar for each range is included
  • Scale is laser etched on thimble for quick and easy reading
  • Carbide facing on the spindle resists wear to keep surfaces flatter with longer accuracy
  • Speeder is always available for quick rotation of the spindle
  • IP65 protection permits use in environments exposed to cutting oil, dust, etc. on models up to 12” / 300mm*
  • Supplied in fitted plastic case

*Anti-corrosion treatment is required after use

SERIES 340 Technical Data
Technology: Digimatic
Units: Inch, Metric
Accuracy: ±[.00016" + .00004 (L/3)"]" / ±3µm
SPC Output: Yes
Ratchet/Thimble: Ratchet Stop
Measuring Faces: Carbide tipped (spindle only)
Display: LCD
Product List
Order No.: Product Image: IP Rating: Range: Resolution: Graduation: Mass: Measuring Force: Flatness: Parallelism: Battery: Battery Life: Optional Accessories:
340-351-30 IP65 0-6" / 0-152.4mm 0.00005" / 0.001mm 0.00100" / 0.01mm 0.96kg 5-10N 0.6µm 0.00012" or less / 3µm or less SR44 (1 pc.) 938882 Approx. 2.4 years under normal use -
340-352-30 - IP65 6-12" / 152.4-304.8mm 0.00010" / 0.001mm 0.00100" / 0.001mm 1.88kg 5-10N 0.6µm 0.00020" or less / 5µm or less SR44 (1 pc.) 938882 Approx. 2.4 years under normal use -
340-720 - 12-18" / 304.8-457.2mm 0.00010" / 0.001mm 0.00100" / 0.001mm 4.75kg 10-14N 1µm 0.00028" or less / 7µm or less SR44 (2 pc. 938882 Approx. 1.8 years under normal use -
340-721 - 18-24" / 457.2-609.6mm 0.00010" / 0.001mm 0.00100" / 0.001mm 6.62kg 10-14N 1µm 0.00036" or less / 9µm or less SR44 (2 pc. 938882 Approx. 1.8 years under normal use -
340-722 - 24-30" / 609.6-762mm 0.00010" / 0.001mm 0.00100" / 0.001mm 10.06kg 10-14N 1µm 0.00040" or less / 10µm or less SR44 (2 pc. 938882 Approx. 1.8 years under normal use -
340-723 - 30-36" / 762-914.4mm 0.00010" / 0.001mm 0.00100" / 0.001mm 11.98kg 10-14N 1µm 0.00044" or less / 12µm or less SR44 (2 pc. 938882 Approx. 1.8 years under normal use -