B-9BMitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.MicrometerThe origin of Mitutoyo’s trustworthy brand of small tool instrumentsDigimatic Outside Micrometers SERIES 293• Models equipped with a Digimatic output port can form part of a statistical process control or networked measurement system. (Refer to page A-3 for details.)• Constant-force device: ratchet stop • Interface Input Tools are available that enable the conversion of measurement data to keyboard signals that are then directly input to cells in off-the-shelf spreadsheet software such as Excel. (Refer to page A-13 for details.)• Measuring faces: Carbide.SERIES 293 — Digimatic Outside Micrometers • Extended battery life of approximately 2.4 years.• Simple design and excluding the data output function keeps price economical.• One switch operation (Origin Set) for easy use.DIMENSIONSUnit: mm(Minimum measuring length)（Spindle）330°b13.5ø7.95 (Measuring face)18ø8ø12ø21ø8 (Anvil)569.928L25986.3Range (mm)Lb300-325300187325-350325199350-375350212375-400375224400-425400236425-450425248450-475450261475-500475273Inch/MetricOrder No.Range (in)Accuracy* (in)Flatness (in)Parallelism (in)293-78212-13±0.00030.0000240.0002293-78313-14293-78414-15293-78515-16±0.000350.00024293-78616-17293-78717-18293-78818-19±0.0004293-78919-200.00028* Excluding quantizing error of ±1 countSPECIFICATIONSMetricOrder No.Range (mm)Accuracy* (µm)Flatness (µm)Parallelism (µm)293-582300 - 325±60.65293-583325 - 350293-584350 - 375293-585375 - 400±76293-586400 - 425293-587425 - 450293-588450 - 475±8293-589475 - 5007* Excluding quantizing error of ±1 countDIMENSIONS Unit: mmTechnical Data SR44 (1 pc.), 938882, for initial operational checks (standard accessory)Length standard: Electromagnetic rotary sensorSpanner (301336), 1 pc. Functions Zero-setting: 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.Technical DataResolution: 0.001 mm or 0.0001 in/0.001 mmMeasuring force: 10 to 15 NSR44 (2 pcs.), 938882, for initial operational checks (standard accessory)Battery life:Approx. 1.8 years under normal use Length standard: Electromagnetic rotary sensorStandard accessories: Reference bar, 1 pc.Spanner (200154), 1 pc.Functions Origin point setting (ABS measurement system): Resets the ABS origin at the current spindle position to the minimum value of the measuring range and switches to ABS mode. Zero-setting (INC measurement system): A brief press on the ZERO/ABS button sets display to zero at the current spindle position and switches to the incremental (INC) measuring mode. A longer press resets to the ABS measuring mode. Hold: Pressing the HOLD button freezes the current value in the display. This function is useful for preserving a measurement in situations of poor visibility where the instrument must be moved away from the workpiece before the reading can be recorded. Function lock: This function allows the PRESET (origin point setting) function and the ZERO (zero-setting) function to be locked to prevent these points being reset accidentally. Auto power ON/OFF: The reading on the LCD disappears after this instrument is idle for about 20 minutes, but the reading and measurement mode are retained. Turning the spindle causes the reading to reappear.Data output: Models equipped with this function have an output port for transferring measurement data to a Statistical Process Control (SPC) system.Error alarm: In case of an overow 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 annunciator appears well before the micrometer becomes unusable. Optional Accessories Connecting CablesRecommended cables: L-Type (does not interfere with operating the thimble.) 1 m: 04AZB512 2 m: 04AZB513Straight type (may interfere with operating the thimble.) 1 m: 959149 2 m: 959150Refer to page B-68 for detailed information about recommended cables. An inspection certicate is supplied as standard. Refer to page U-11 for details.SPECIFICATIONSMetric With ratchet stop/Measuring force: 5-10 NOrder No.Range (mm)Resolution (mm)Accuracy* (µm)293-821-300 - 250.001±2* Excluding quantizing error of ±1 countInch/Metric With ratchet stop/Measuring force: 5-10 NOrder No.Range (in)ResolutionAccuracy* (in)293-831-300 -10.00005 in/0.001 mm±0.0001* Excluding quantizing error of ±1 countInch/Metric With friction thimble/Measuring force: 5-10 NOrder No.Range (in)ResolutionAccuracy* (in)293-832-300 -10.00005 in/0.001 mm±0.0001* Excluding quantizing error of ±1 countError alarm: In case of an overow 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 annunciator appears well before the micrometer becomes unusable.293-821-30(Spindle)ø18ø6.3522.525948.562.92610.8ø 6.3(Measuring face)1"(25.4mm) 最大測定長時(スピンドル径)144.6188.8.131.52φ6.3(測定面)1.625.4φ6.3(測定面)10.848.59184.108.40.2067.7φ6.3526ø18Ratchet thimble typeFriction thimble type• Equipped with Ratchet Stop for constant measuring force.• Measuring faces: Carbide.293-582Products equipped with the measurement data output function can be connected to the measurement data network system MeasurLink (refer to page A-5 for details).