B-77BMitutoyo 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.• Equipped with digital display and output.• series 350 IP65 models: the Digimatic output port enables inclusion in a statistical process control or networked measurement system. (Refer to page A-3 for details).IP Codes (series 350)Level 6:DustproofNo ingress of dust allowed. Level 5:Protected against water jets.Water projected in jets against the enclosure from any direction shall have no harmful effects.Battery for series 350SR44(1 pc), 938882 for initial operation checks (standard accessory)Battery for series 164SR44(2 pcs.), 938882 for initial operation checks (standard accessory) Battery life:Approx. 2.4 years under normal use (for series 350-XXX)Approx. 1.8 years under normal use (for series 164-163, 164)Length standard: Electromagnetic rotary sensor Standard accessories: Reference bar, 1 pcSpanner (301336), 1 pc (for series 350-XXX)Screwdriver (No.05CAA952), 1pc (for series 164-163, 164) Functions (series 164/350)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. Data output: Equipped with output port for transferring measurement data to a Statistical Process Control (SPC) and measurement system.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 on the LCD 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.Optional accessoriesConnecting cables for series 164 1m: 959149 2m: 959150USB Input Tool Direct USB-ITN-C (2m): 06ADV380C 02AZD790C 160mm For foot switch: 02AZE140CConnecting cables for series 350 1m: 05CZA662 2m: 05CZA663 USB Input Tool Direct USB-ITN-B (2m): 06ADV380B Connecting cables for U-WAVE-T 02AZD790B 160mm For foot switch: 02AZE140B Refer to page B-68 for details.Micrometer HeadThe origin of Mitutoyo’s trustworthy brand of small tool instruments Digimatic Micrometer HeadsSeries 164/350These marks indicate that a product has successfully passed IP65-level testing, which is carried out by the independent German certication organization TÜV Rheinland.SPECIFICATIONSMetricOrder No.RangeResolutionAccuracy**StemStem diaSpindle endGraduation features164-1630 - 50mm0.001mm±3µmPlain18mmFlat (carbide tip)—350-251-300 - 25mm±2µm10mmStandard350-252-30W/ clamp nut350-253-30PlainSpherical (SR4)(carbide tip)350-254-30W/ clamp nut350-281-30*Plain12mmFlat (carbide tip)350-282-30*W/ clamp nut350-283-30*PlainSpherical (SR4)(carbide tip)350-284-30*W/ clamp nut350-261-30*PlainFlat* IP65 dust/water protection type** Excluding quantizing errorInch/MetricOrder No.RangeResolutionAccuracy**StemStem diaSpindle endGraduation features164-1640 - 2".00005"/ 0.001mm±.00015"Plain0.709"Flat (carbide tip)—350-351-300 - 1"±.0001"0.375"Standard350-352-30W/ clamp nut350-353-30PlainSpherical (SR4)(carbide tip)350-354-30W/ clamp nut350-381-30*Plain0.5"Flat (carbide tip)350-382-30*W/ clamp nut350-383-30*PlainSpherical (SR4)(carbide tip)350-384-30*W/ clamp nut350-361-30*PlainFlat* IP65 dust/water protection type* Note: Stem diameter of IP65 type is 12mm.** Excluding quantizing error0000040191DIMENSIONSPlain stemUnit: mmPlain stem164-163 Rotatable display Mass: 490g141514179(29)2ø18 0-0.02ø8ø11ø4952.211.62224.5330°+/- buttonZERO / ABS button / ON switchPRESETSpeeder Speeder( ): with spindle fully retracted


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