MITUTOYO SERIES 326, 126 SCREW THREAD MICROMETER WITH INTERCHANGEABLE ANVIL / SPINDLE TIP TYPE

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▪This is a screw thread micrometer with changeable anvil and spindle tips. It enables direct reading of screw pitch diameter. Both analog and digital types are available.
▪Interchangeable anvil and spindle tips are optional. Select the right model to meet the specifications of your screw thread.
▪Equipped with Ratchet Stop for constant measuring force.
▪Supplied with a setting standard for adjusting zero point for metric (unified) 60°

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MITUTOYO SERIES 326, 126 SCREW THREAD MICROMETER WITH INTERCHANGEABLE ANVIL / SPINDLE TIP TYPE

Product Overview

The Mitutoyo Series 326 and 126 are screw thread micrometers featuring interchangeable anvil and spindle tips designed to enable direct reading of screw pitch diameter. Both analog (Series 126) and digital/SPC (Series 326) configurations are available. Each unit is equipped with a Ratchet Stop for constant measuring force and is supplied with a setting standard for adjusting the zero point for metric (unified) 60° threads (excluding 0 to 25 mm / 0 to 1 inch measuring ranges).

Key Features & Capabilities

Interchangeable Anvils and Spindle Tips: Optional tips can be selected to match specific screw thread requirements (Metric/Unified and Whitworth options available).
Constant Measuring Force: Integrated Ratchet Stop ensures repeatable, reliable measurement.
Data Output & Power (Digital Models - Series 326): Equipped with an electromagnetic rotary sensor, SPC data output capability, and powered by an SR44 battery (approx. 2.4 years battery life under normal use).
Zero Point Adjustment: Supplied with a matching setting standard for metric/unified 60° threads (except 0-25 mm / 0-1 inch models).

Technical Specifications

Metric Models (Series 326 - With SPC Data Output)

Code No.	Range (mm)	Resolution (mm)	Spindle Feed Error (μm)
326-251-30	0 - 25	0.001	3
326-252-30	25 - 50	0.001	3
326-253-30	50 - 75	0.001	3
326-254-30	75 - 100	0.001	3

Inch/Metric Models (Series 326 - With SPC Data Output)

Code No.	Range (in)	Resolution	Spindle Feed Error (in)
326-351-30	0 - 1	0.00005 in / 0.001 mm	0.00015
326-352-30	1 - 2	0.00005 in / 0.001 mm	0.00015
326-353-30	2 - 3	0.00005 in / 0.001 mm	0.00015
326-354-30	3 - 4	0.00005 in / 0.001 mm	0.00015

Metric Models (Series 126 - Analog)

Code No.	Range (mm)	Graduation (mm)	Spindle Feed Error (μm)
126-125	0 - 25	0.01	3
126-126	25 - 50	0.01	3
126-127	50 - 75	0.01	3
126-128	75 - 100	0.01	3
126-129	100 - 125	0.01	3
126-130	125 - 150	0.01	3
126-131	150 - 175	0.01	3
126-132	175 - 200	0.01	3
126-133	200 - 225	0.01	3
126-134	225 - 250	0.01	3
126-135	250 - 275	0.01	3
126-136	275 - 300	0.01	3

Inch Models (Series 126 - Analog)

Code No.	Range (in)	Graduation (in)	Spindle Feed Error (in)
126-137	0 - 1	0.001	0.00015
126-138	1 - 2	0.001	0.00015
126-139	2 - 3	0.001	0.00015
126-140	3 - 4	0.001	0.00015
126-141	4 - 5	0.001	0.00015
126-142	5 - 6	0.001	0.00015
126-143	6 - 7	0.001	0.00015
126-901	0 - 1	0.001	0.00015
126-902	1 - 2	0.001	0.00015
126-903	2 - 3	0.001	0.00015
126-904	3 - 4	0.001	0.00015
126-905	4 - 5	0.001	0.00015
126-906	5 - 6	0.001	0.00015