Micrometers
Digimatic Outside Micrometers SERIES 293 • Simple design with no data output for accuracy at a lower cost. • Provided only with an origin-set button for easy origin setting, and an inch/mm conversion button for Inch type models. • Equipped with Ratchet Stop or Friction Thimble for constant measuring force.
Functions Zero-setting :
• Extended battery life of approximately 2.4 years, which helps reduce the number of battery replacements required. • Measuring faces: Carbide tipped. • Without SPC data output.
A brief press on the ORIGIN button sets display to zero at the current spindle position (zero-setting), which allows easy comparison measurement. Auto power ON/OFF : The reading on the LCD disappears after this instrument is idle for about 20 minutes, but the reading is retained. Turning the spindle causes the reading on the LCD to reappear. Error display : In case of an overflow on the LCD or a computing error, an error message appears on the LCD, and the measuring function stops. This prevents an instrument from giving an erroneous reading. Also, when the battery voltage drops to a certain level, the low-battery-voltage alarm indicator appears well before the micrometer becomes unusable.
B
293-831-30
SPECIFICATIONS Inch/Metric
Optional Accessories For additional accessories refer to pages B-8, and B-70 - B76
With ratchet stop
Measuring force (N)
Flatness (in)
Parallelism (in)
Mass (g)
Order No.
Range (in)
Resolution
Accuracy* (in)
293-831-30 Inch / Metric
0 - 1 0.00005 in/0.001 mm 5 - 10
±0.0001
0.000012 0.00008 270
With friction thimble
Measuring force (N)
Flatness (in)
Parallelism (in)
Mass (g)
Order No.
Range (in)
Resolution
Accuracy* (in)
Rachet Stop (Ratchet speeder)
293-832-30
0 - 1 0.00005 in/0.001 mm 5 - 10
±0.0001
0.000012 0.00008 270
Metric
With ratchet stop
Measuring force (N)
Flatness (µm)
Parallelism (µm)
Mass (g)
Order No.
Range (mm)
Resolution (mm)
Accuracy* (µm)
293-821-30
0 - 25
0.001
5 - 10
±2
0.3
2
270
• Power source: SR44 battery (1 pc.), 938882 included as standard * E MPE (ISO 3611:2023 and ASME B89.1.13-2013)
Friction Thimble (No ratcheting action)
DIMENSIONS
Unit: mm
Ratchet thimble type
2.5 9 25
2
48.5
62.9
Need Repair?
B-10
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