Holtests – Series 368 – Three Point/Two-Point Internal Micrometers

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Starting at
$594.00

These Holtests are versatile, self-centering three-point internal micrometers for the accurate and efficient direct-measurement of internal diameters. Three anvils, evenly spaced at 120° apart, contact the internal wall surfaces and find true alignment with the axis of the bore for accurate ID measurement.
TiN-coated measuring contact points(over 6mm/.275″ range models) provide excellent durability and impact resistance and allow the instrument to measure right to the bottom of a blind hole.
Highly durable because of carbide-tipped contact points (anvils).
Measurement can be taken closer to the bottom of the blind bore.
Can measure deep holes using an Extension rod (optional) which is available on models over 6mm (.275″) measuring range.
With Ratchet Stop for constant force.
Setting Rings for zero point adjustment are optional.
Supplied in fitted plastic case up to 100mm / 4”. Over 100mm / 4” supplied in wooden case.

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SKU: N/A Category:
SKUItem TypeModelRangeInd. RangeAccuracyRemarksHead Assy Order No.Rings IncludedPriceBuyhf:att:pa_item-typehf:att:pa_modelhf:att:pa_remarkshf:att:pa_10-pin-digimatic-inputhf:att:pa_2d-viewhf:att:pa_a-axis-indexinghf:att:pa_ac-adapterhf:att:pa_academic-licensehf:att:pa_angle-directionhf:att:pa_applicable-gagehf:att:pa_archive-datahf:att:pa_assignable-cause-actionhf:att:pa_attribute-msa-4hf:att:pa_attribute-short-methodhf:att:pa_audit-trailshf:att:pa_auto-generated-emailshf:att:pa_automates-reportinghf:att:pa_b-axis-indexinghf:att:pa_batch-data-collectionhf:att:pa_batteryhf:att:pa_battery-lifehf:att:pa_bias-studyhf:att:pa_bluetooth-4-2hf:att:pa_bracket-kithf:att:pa_cable-lengthhf:att:pa_cable-namehf:att:pa_cable-typehf:att:pa_classic-spc-viewshf:att:pa_cloud-environmenthf:att:pa_collection-schedulerhf:att:pa_colorhf:att:pa_column-row-mappinghf:att:pa_connectionhf:att:pa_connection-cable-requiredhf:att:pa_connection-typehf:att:pa_connection-unit-requiredhf:att:pa_continuous-data-sendhf:att:pa_custom-calibration-certhf:att:pa_custom-calibration-prochf:att:pa_custom-report-templateshf:att:pa_d2hf:att:pa_data-entryhf:att:pa_data-inputhf:att:pa_data-outputhf:att:pa_data-processing-0hf:att:pa_data-processing-1hf:att:pa_data-processing-3hf:att:pa_data-reception-indicationhf:att:pa_data-send-buttonhf:att:pa_data-send-switchhf:att:pa_data-storagehf:att:pa_datasheethf:att:pa_depth-of-fieldhf:att:pa_displayhf:att:pa_editionhf:att:pa_electronic-signatureshf:att:pa_email-alertshf:att:pa_external-controlhf:att:pa_factory-quality-dashboardhf:att:pa_filterhf:att:pa_fithf:att:pa_fit-transmitterhf:att:pa_footswitch-connectionhf:att:pa_form-vision-connectivityhf:att:pa_free-mobile-appshf:att:pa_functionhf:att:pa_gage-capacityhf:att:pa_gage-managementhf:att:pa_gage-rrhf:att:pa_head-mountinghf:att:pa_hoops-3d-viewhf:att:pa_import-asciihf:att:pa_import-gage-libraryhf:att:pa_improves-work-efficiencyhf:att:pa_includes-sql-expresshf:att:pa_inputshf:att:pa_lengthhf:att:pa_linearity-studyhf:att:pa_live-collection-dashboardhf:att:pa_manager-viewshf:att:pa_masshf:att:pa_max-min-tirhf:att:pa_maximum-extension-barhf:att:pa_measuring-toolshf:att:pa_merge-copy-and-edit-datahf:att:pa_mounting-optionshf:att:pa_network-connectedhf:att:pa_number-of-licenseshf:att:pa_operating-temperature-rangehf:att:pa_optional-vcp-drivershf:att:pa_outputhf:att:pa_outside-dimensionshf:att:pa_overtravel-break-loadhf:att:pa_pass-thru-port-inputhf:att:pa_pc-requirementhf:att:pa_polling-from-pchf:att:pa_positional-repeatabilityhf:att:pa_positionshf:att:pa_power-supplyhf:att:pa_print-capacityhf:att:pa_print-speedhf:att:pa_printer-paperhf:att:pa_printing-methodhf:att:pa_probe-mountinghf:att:pa_probe-socketshf:att:pa_probe-status-indicationhf:att:pa_process-analyzerhf:att:pa_process-managerhf:att:pa_range-x-axishf:att:pa_range-y-axishf:att:pa_real-time-professionalhf:att:pa_real-time-standardhf:att:pa_repeatability-of-positionhf:att:pa_report-schedulerhf:att:pa_request-datahf:att:pa_resolutionhf:att:pa_rs-232c-cablehf:att:pa_rs232-outputhf:att:pa_scatter-charthf:att:pa_serial-rs232-inputhf:att:pa_signalhf:att:pa_spc-cablehf:att:pa_stability-studyhf:att:pa_suitable-interfaceshf:att:pa_summary-analysishf:att:pa_supplies-5vhf:att:pa_support-capabilityhf:att:pa_supported-oshf:att:pa_supports-mobile-deviceshf:att:pa_supports-u-wavehf:att:pa_supports-usb-input-toolhf:att:pa_supports-usb-itnhf:att:pa_tagging-datahf:att:pa_tech-support-includedhf:att:pa_test-for-normalityhf:att:pa_timed-data-collectionhf:att:pa_timed-data-sendhf:att:pa_timer-inputhf:att:pa_tolerance-judgementhf:att:pa_track-gage-calibrationhf:att:pa_transmitterhf:att:pa_type-1-studyhf:att:pa_u-wave-bluetoothhf:att:pa_u-wave-r-requiredhf:att:pa_u-wave-r-unitshf:att:pa_u-wave-thf:att:pa_u-wave-t-unitshf:att:pa_usb-cablehf:att:pa_usb-drivershf:att:pa_usb-outputhf:att:pa_variable-crossed-anovahf:att:pa_variable-crossed-rangehf:att:pa_variable-nested-anovahf:att:pa_variable-nested-rangehf:att:pa_variable-range-methodhf:att:pa_workgroup-site-licensehf:att:pa_workpiece-max-load
368-021Inch0.8-1in-.0001in--$1,494.00
inch
368-022Inch.1-.12in-.0001in--$1,494.00
inch
368-023Inch.12-.16in-.0001in--$1,197.00
inch
368-024Inch.16-.2in-.0001in--$1,197.00
inch
368-025Inch.2-.24in-.0001in--$1,197.00
inch
368-026Inch.24-.28in-.0001in--$1,197.00
inch
368-261Inch.275-.35in-.0001in04AZB139-$594.00
inch
368-262Inch.35-.425in-.0001in04AZB140-$594.00
inch
368-263Inch.425-.5in-.0001in04AZB141-$594.00
inch
368-264Inch.5-.65in-.0001in04AZA721-$616.50
inch
368-265Inch.65-.8in-.0001in04AZA722-$616.50
inch
368-266Inch.8-1in-.00015in04AZA730-$639.90
inch
368-267Inch1-1.2in-.00015in04AZA731-$639.90
inch
368-268Inch1.2-1.6in-.00015in04AZA739-$799.20
inch
368-269Inch1.6-2in-.00015in04AZA740-$842.40
inch
368-270Inch2-2.5in-.00015in04AZA754-$847.80
inch
368-271Inch2.5-3in-.00015in04AZA755-$918.00
inch
368-272Inch3-3.5in-.00015in04AZA756-$945.00
inch
368-273Inch3.5-4in-.00015in04AZA757-$990.00
inch
368-274Inch4-5in-.00025in04AZA783-$1,269.00
inch
368-275Inch5-6in-.00025in04AZA784-$1,440.00
inch
368-276Inch6-7in-.00025in04AZA785-$1,476.00
inch
368-277Inch7-8in-.00025in04AZA786-$1,530.00
inch
368-278Inch8-9in-.00025in04AZA787-$1,728.00
inch
368-279Inch9-10in-.00025in04AZA788-$1,944.00
inch
368-280Inch10-11in-.00025in04AZA789-$1,962.00
inch
368-281Inch11-12in-.00025in04AZA790-$2,016.00
inch
368-916Inch Set.275-.5in.275-.35 in,.35-.425 in,.425-.5 in--.35in DIA., .5in DIA.$2,196.00
inch-set
368-917Inch Set.5-.8in.5-.65 in,.65-.8 in--.65in DIA.$1,476.00
inch-set
368-918Inch Set.8-2in.8-1 in,1-1.2 in,1.2-1.6 in,1.6-2 in--1in DIA., 1.6in DIA.$3,384.00
inch-set
368-919Inch Set2-4in2-2.5 in,2.5-3 in,3-3.5 in,3.5-4 in--2.5in DIA., 3.5in DIA.$4,815.00
inch-set
368-920Inch Set4-8in4-5 in,5-6 in,6-7 in,7-8 in--5in DIA., 7in DIA.$7,380.00
inch-set
368-926Inch Set.08-.12in.08-1 in,.1-.12 in--.1in DIA.$3,168.00
inch-set
368-927Inch Set.12-.28in.12-.16 in,.16-.2 in,.2-.24 in,.24-.28 in--.16in DIA., .24im DIA.$5,049.00
inch-set
368-001Metric2-2.5mm-2µm--$1,494.00
metric
368-002Metric2.5-3mm-2µm--$1,494.00
metric
368-003Metric3-4mm-2µm--$1,197.00
metric
368-004Metric4-5mm-2µm--$1,197.00
metric
368-005Metric5-6mm-2µm--$1,197.00
metric
368-161Metric6-8mm-2µm04AZB136-$594.00
metric
368-162Metric8-10mm-2µm04AZB137-$594.00
metric
368-163Metric10-12mm-2µm04AZB138-$594.00
metric
368-164Metric12-16mm-2µm04AZA719-$616.50
metric
368-165Metric16-20mm-2µm04AZA720-$616.50
metric
368-166Metric20-25mm-3µm04AZA728-$639.90
metric
368-167Metric25-30mm-3µm04AZA729-$639.90
metric
368-168Metric30-40mm-3µm04AZA737-$799.20
metric
368-169Metric40-50mm-3µm04AZA738-$842.40
metric
368-170Metric50-63mm-3µm04AZA750-$847.80
metric
368-171Metric62-75mm-3µm04AZA751-$885.60
metric
368-172Metric75-88mm-3µm04AZA752-$945.00
metric
368-173Metric87-100mm-3µm04AZA753-$990.00
metric
368-174Metric100-125mm-5µm04AZA775-$1,269.00
metric
368-175Metric125-150mm-5µm04AZA776-$1,368.00
metric
368-176Metric150-175mm-5µm04AZA777-$1,476.00
metric
368-177Metric175-200mm-5µm04AZA778-$1,530.00
metric
368-178Metric200-225mm-5µm04AZA779-$1,728.00
metric
368-179Metric225-250mm-5µm04AZA780-$1,881.00
metric
368-180Metric250-275mm-5µm04AZA781-$1,962.00
metric
368-181Metric275-300mm-5µm04AZA782-$2,016.00
metric
368-906Metric Set2-3mm2-2.5,2.5-3 mm--Ø2.5mm$3,168.00
metric-set
368-907Metric Set3-6mm3-4,4-5,5-6 mm--Ø4mm,Ø5mm$3,870.00
metric-set
368-911Metric Set6-12mm6-8,8-10,10-12 mm--Ø8mm,Ø10mm$2,196.00
metric-set
368-912Metric Set12-20mm12-16,16-20 mm--Ø16mm$1,476.00
metric-set
368-913Metric Set20-50mm20-25,25-30,30-40,40-50 mm--Ø25mm,Ø40mm$3,384.00
metric-set
368-914Metric Set50-100mm50-63,62-75,75-88,87-100 mm--Ø62mm,Ø87mm$4,635.00
metric-set
368-915Metric Set100-200mm100-125,125-150,150-175,175-200 mm--Ø125mm,Ø175mm$7,308.00
metric-set

Optional Accessories

SKUDescriptionPriceBuyhf:att:pa_10-pin-digimatic-inputhf:att:pa_2d-viewhf:att:pa_a-axis-indexinghf:att:pa_ac-adapterhf:att:pa_academic-licensehf:att:pa_angle-directionhf:att:pa_applicable-gagehf:att:pa_archive-datahf:att:pa_assignable-cause-actionhf:att:pa_attribute-msa-4hf:att:pa_attribute-short-methodhf:att:pa_audit-trailshf:att:pa_auto-generated-emailshf:att:pa_automates-reportinghf:att:pa_b-axis-indexinghf:att:pa_batch-data-collectionhf:att:pa_batteryhf:att:pa_battery-lifehf:att:pa_bias-studyhf:att:pa_bluetooth-4-2hf:att:pa_bracket-kithf:att:pa_cable-lengthhf:att:pa_cable-namehf:att:pa_cable-typehf:att:pa_classic-spc-viewshf:att:pa_cloud-environmenthf:att:pa_collection-schedulerhf:att:pa_colorhf:att:pa_column-row-mappinghf:att:pa_connectionhf:att:pa_connection-cable-requiredhf:att:pa_connection-typehf:att:pa_connection-unit-requiredhf:att:pa_continuous-data-sendhf:att:pa_custom-calibration-certhf:att:pa_custom-calibration-prochf:att:pa_custom-report-templateshf:att:pa_d2hf:att:pa_data-entryhf:att:pa_data-inputhf:att:pa_data-outputhf:att:pa_data-processing-0hf:att:pa_data-processing-1hf:att:pa_data-processing-3hf:att:pa_data-reception-indicationhf:att:pa_data-send-buttonhf:att:pa_data-send-switchhf:att:pa_data-storagehf:att:pa_datasheethf:att:pa_depth-of-fieldhf:att:pa_displayhf:att:pa_editionhf:att:pa_electronic-signatureshf:att:pa_email-alertshf:att:pa_external-controlhf:att:pa_factory-quality-dashboardhf:att:pa_filterhf:att:pa_fithf:att:pa_fit-transmitterhf:att:pa_footswitch-connectionhf:att:pa_form-vision-connectivityhf:att:pa_free-mobile-appshf:att:pa_functionhf:att:pa_gage-capacityhf:att:pa_gage-managementhf:att:pa_gage-rrhf:att:pa_head-mountinghf:att:pa_hoops-3d-viewhf:att:pa_import-asciihf:att:pa_import-gage-libraryhf:att:pa_improves-work-efficiencyhf:att:pa_includes-sql-expresshf:att:pa_inputshf:att:pa_item-typehf:att:pa_lengthhf:att:pa_linearity-studyhf:att:pa_live-collection-dashboardhf:att:pa_manager-viewshf:att:pa_masshf:att:pa_max-min-tirhf:att:pa_maximum-extension-barhf:att:pa_measuring-toolshf:att:pa_merge-copy-and-edit-datahf:att:pa_modelhf:att:pa_mounting-optionshf:att:pa_network-connectedhf:att:pa_number-of-licenseshf:att:pa_operating-temperature-rangehf:att:pa_optional-vcp-drivershf:att:pa_outputhf:att:pa_outside-dimensionshf:att:pa_overtravel-break-loadhf:att:pa_pass-thru-port-inputhf:att:pa_pc-requirementhf:att:pa_polling-from-pchf:att:pa_positional-repeatabilityhf:att:pa_positionshf:att:pa_power-supplyhf:att:pa_print-capacityhf:att:pa_print-speedhf:att:pa_printer-paperhf:att:pa_printing-methodhf:att:pa_probe-mountinghf:att:pa_probe-socketshf:att:pa_probe-status-indicationhf:att:pa_process-analyzerhf:att:pa_process-managerhf:att:pa_range-x-axishf:att:pa_range-y-axishf:att:pa_real-time-professionalhf:att:pa_real-time-standardhf:att:pa_remarkshf:att:pa_repeatability-of-positionhf:att:pa_report-schedulerhf:att:pa_request-datahf:att:pa_resolutionhf:att:pa_rs-232c-cablehf:att:pa_rs232-outputhf:att:pa_scatter-charthf:att:pa_serial-rs232-inputhf:att:pa_signalhf:att:pa_spc-cablehf:att:pa_stability-studyhf:att:pa_suitable-interfaceshf:att:pa_summary-analysishf:att:pa_supplies-5vhf:att:pa_support-capabilityhf:att:pa_supported-oshf:att:pa_supports-mobile-deviceshf:att:pa_supports-u-wavehf:att:pa_supports-usb-input-toolhf:att:pa_supports-usb-itnhf:att:pa_tagging-datahf:att:pa_tech-support-includedhf:att:pa_test-for-normalityhf:att:pa_timed-data-collectionhf:att:pa_timed-data-sendhf:att:pa_timer-inputhf:att:pa_tolerance-judgementhf:att:pa_track-gage-calibrationhf:att:pa_transmitterhf:att:pa_type-1-studyhf:att:pa_u-wave-bluetoothhf:att:pa_u-wave-r-requiredhf:att:pa_u-wave-r-unitshf:att:pa_u-wave-thf:att:pa_u-wave-t-unitshf:att:pa_usb-cablehf:att:pa_usb-drivershf:att:pa_usb-outputhf:att:pa_variable-crossed-anovahf:att:pa_variable-crossed-rangehf:att:pa_variable-nested-anovahf:att:pa_variable-nested-rangehf:att:pa_variable-range-methodhf:att:pa_workgroup-site-licensehf:att:pa_workpiece-max-load

Features

These Holtests are versatile, self-centering three-point internal micrometers for the accurate and efficient direct-measurement of internal diameters. Three anvils, evenly spaced at 120° apart, contact the internal wall surfaces and find true alignment with the axis of the bore for accurate ID measurement.
TiN-coated measuring contact points(over 6mm/.275″ range models) provide excellent durability and impact resistance and allow the instrument to measure right to the bottom of a blind hole.
Highly durable because of carbide-tipped contact points (anvils).
Measurement can be taken closer to the bottom of the blind bore.
Can measure deep holes using an Extension rod (optional) which is available on models over 6mm (.275″) measuring range.
With Ratchet Stop for constant force.
Setting Rings for zero point adjustment are optional.
Supplied in fitted plastic case up to 100mm / 4”. Over 100mm / 4” supplied in wooden case.

Technical Data

Graduation: 0.001mm, 0.005mm*, .0001″ or .0002″* (*over 12mm or .5” models)

Optional Accessories

952322: Extension rod 100mm / 3.94” For range 6-12mm / .275-.5” models
952621: Extension rod 150mm / 5.9” For range 12-20mm / .5″ – .8” models
952622: Extension rod 150mm / 5.9” For range 20-50mm / .8″ – 2” models
952623: Extension rod 150mm / 5.9” For range 50-300mm / 2″-12” models

Additional information

Weight N/A
Dimensions N/A
Item Type

, , ,

Model

-, HT-.35”R, HT-.425”R, HT-5”R, HT-.65”R, HT-.8”R, HT-1”R, HT-1.2”R, HT-1.6”R, HT-2”R, HT-2.5”R, HT-3”R, HT-3.5”R, HT-4”R, HT-5”R, HT-6”R, HT-7”R, HT-8”R, HT-9”R, HT-10”R, HT-11”R, HT-12”R, HT-8R, HT-10R, HT-12R, HT-16R, HT-20R, HT-25R, HT-30R, HT-40R, HT-50R, HT-63R, HT-75R, HT-88R, HT-100R, HT-125R, HT-150R, HT-175R, HT-200R, HT-225R, HT-250R, HT-275R, HT-300R

Head Assy. Order No.

-, 04AZB139, 04AZB140, 04AZB141, 04AZA721, 04AZA722, 04AZA730, 04AZA731, 04AZA739, 04AZA740, 04AZA754, 04AZA755, 04AZA756, 04AZA757, 04AZA783, 04AZA784, 04AZA785, 04AZA786, 04AZA787, 04AZA788, 04AZA789, 04AZA790, 04AZB136, 04AZB137, 04AZB138, 04AZA719, 04AZA720, 04AZA728, 04AZA729, 04AZA737, 04AZA738, 04AZA750, 04AZA751, 04AZA752, 04AZA753, 04AZA775, 04AZA776, 04AZA777, 04AZA778, 04AZA779, 04AZA780, 04AZA781, 04AZA782

Range

0.8-1in, .1-.12in, .12-.16in, .16-.2in, .2-.24in, .24-.28in, .275-.35in, .35-.425in, .425-.5in, .5-.65in, .65-.8in, .8-1in, 1-1.2in, 1.2-1.6in, 1.6-2in, 2-2.5in, 2.5-3in, 3-3.5in, 3.5-4in, 4-5in, 5-6in, 6-7in, 7-8in, 8-9in, 9-10in, 10-11in, 11-12in, .275-.5in, .5-.8in, .8-2in, 2-4in, 4-8in, .08-.12in, .12-.28in, 2-2.5mm, 2.5-3mm, 3-4mm, 4-5mm, 5-6mm, 6-8mm, 8-10mm, 10-12mm, 12-16mm, 16-20mm, 20-25mm, 25-30mm, 30-40mm, 40-50mm, 50-63mm, 62-75mm, 75-88mm, 87-100mm, 100-125mm, 125-150mm, 150-175mm, 175-200mm, 200-225mm, 225-250mm, 250-275mm, 275-300mm, 2-3mm, 3-6mm, 6-12mm, 12-20mm, 20-50mm, 50-100mm, 100-200mm

Individual Range

-, .275-.35 in,.35-.425 in,.425-.5 in, .5-.65 in,.65-.8 in, .8-1 in,1-1.2 in,1.2-1.6 in,1.6-2 in, 2-2.5 in,2.5-3 in,3-3.5 in,3.5-4 in, 4-5 in,5-6 in,6-7 in,7-8 in, .08-1 in,.1-.12 in, .12-.16 in,.16-.2 in,.2-.24 in,.24-.28 in, 2-2.5,2.5-3 mm, 3-4,4-5,5-6 mm, 6-8,8-10,10-12 mm, 12-16,16-20 mm, 20-25,25-30,30-40,40-50 mm, 50-63,62-75,75-88,87-100 mm, 100-125,125-150,150-175,175-200 mm

Accuracy

-, .0001in, .00015in, .00025in, 2µm, 3µm, 5µm

Rings Incl.

-, .35in DIA., .5in DIA., .65in DIA., 1in DIA., 1.6in DIA., 2.5in DIA., 3.5in DIA., 5in DIA., 7in DIA., .1in DIA., .16in DIA., .24im DIA., Ø2.5mm, Ø4mm,Ø5mm, Ø8mm,Ø10mm, Ø16mm, Ø25mm,Ø40mm, Ø62mm,Ø87mm, Ø125mm,Ø175mm

Remarks

-, Carbide Contact Point, with titanium coated contact points, with extension rod, with extension rod/titanium coated contact points

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