B-8BMitutoyo operates a policy of continuous improvement that aims to provide the customer with the benet of the latest technological advances.Therefore the company reserves the right to change any or all aspects of any product specication without notice.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. Data output*4 : Models equipped with this function have an output port for transferring measurement data to a Statistical Process Control (SPC) system. *4: Only models with the data output functionAuto 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.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. Function lock : This function allows the ORIGIN (origin point setting) function and the ZERO (zero-setting ) function to be locked to prevent these points being reset accidentally. DIMENSIONSUnit: mmRatchet stopRatchet thimble typeInch/MetricOrder NoRangeResolutionAccuracy*ParallelismConstant-force deviceMasswith SPC data output293-330-300 - 1".00005" /0.001mm±.00005”.00004"With ratchet stop270g293-331-301" - 2"330g293-332-302" - 3".00008"470g293-333-303" - 4"±.0001”625g293-350-304" - 5".0001" /0.001mm.00012"600g293-351-305" - 6"740g293-352-306" - 7"±.00015”800g293-353-307" - 8".00016"970g293-354-308" - 9"1100g293-355-309" -10"±.0002”1270g293-356-3010" - 11"1370g293-357-3011" - 12".0002"1590g293-334-300 - 1".00005" /0.001mm±.00005”.00004"With ratchet thimble280g293-335-30With friction thimble275g293-336-301" - 2"335gwithout SPC data output293-340-300 - 1".00005" /0.001mm±.00005”.00004"With ratchet stop270g293-341-301" - 2"330g293-342-302" - 3".00008"470g293-343-303" - 4"±.0001”625g293-344-300 - 1"±.00005”.00004"With ratchet thimble280g293-345-301" - 2"340g293-346-302" - 3".00008"480g293-347-303" - 4"±.0001”635g293-348-300 - 1"±.00005”.00004"With friction thimble275g* Excluding quantizing error• All-Digit preset type: models over 125mm (5”) measuring rangeSPECIFICATIONSMetricOrder NoRangeResolutionAccuracy*ParallelismConstant-force deviceMasswith SPC data output293-230-300 - 25mm0.001mm±1µm1µmWith ratchet stop270g293-231-3025 - 50mm330g293-232-3050 - 75mm2µm470g293-233-3075 - 100mm±2µm625g293-250-30100 - 125mm3µm600g293-251-30125 - 150mm740g293-252-30150 - 175mm±3µm800g293-253-30175 - 200mm4µm970g293-254-30200 - 225mm1100g293-255-30225 - 250mm±4µm1270g293-256-30250 - 275mm1370g293-257-30275 - 300mm5µm1590g293-234-300 - 25mm±1µm1µmWith ratchet thimble280g293-235-3025 - 50mm340g293-236-3050 - 75mm2µm480g293-237-3075 - 100mm±2µm635gwithout SPC data output293-240-300 - 25mm0.001mm±1µm1µmWith ratchet stop270g293-241-3025 - 50mm330g293-242-3050 - 75mm2µm470g293-243-3075 - 100mm±2µm625g293-244-300 - 25mm±1µm1µmWith ratchet thimble280g293-245-3025 - 50mm340g293-246-3050 - 75mm2µm480g293-247-3075 - 100mm±2µm635g* Excluding quantizing error• All-Digit preset type: models over 125mm (5”) measuring rangeL2.52562.949.510.8aø18ø6.3514.52cbø19.363.610.862.9ø1848.5aø6.35L252cbø 6.3ø 6.3L2.52562.949.510.8ø18ø6.3514.52ø19.363.610.862.9ø1848.5aø6.35L252cbø 6.3ø 6.3ø18a10.866.562.9252Lbcø 6.3ø 6.3ø 6.35RangeOrder No.Labc0-25mm293-230-30/293-240-3006.5252.525-50mm293-231-30/293-241-30257.332.550-75mm293-232-30/293-242-305010.14775-100mm293-233-30/293-243-307511.5600-25mm293-234-30/293-244-3006.52525-50mm293-235-30/293-245-30257.332.5100-125mm293-250-3010016.7765.3125-150mm293-251-3012518.8905.7150-175mm293-252-3015019.11036.1175-200mm293-253-3017518.21156.3200-225mm293-254-3020016.81266.7225-250mm293-255-30225181395.5250-275mm293-256-302501526.5275-300mm293-257-302751661"(25.4mm) 最大測定長時(スピン ドル径)146.1251025.149.7ø6.35ø6.3 (測定面)1.625.4ø6.3 (測定面)10.848.5925.42.51.651.2ø18Ratchet stop type over 100mmMeasuring range: 100mm or lessFriction thimble type


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