MITUTOYO-SERIES 137, 337 – EXTENSION ROD TYPE-TUBULAR INSIDE MICROMETERS

Name: MITUTOYO-SERIES 137, 337 – EXTENSION ROD TYPE-TUBULAR INSIDE MICROMETERS
Brand: MITUTOYO
SKU: 337-101

Code:

Wide range of inside measurements possible by combining extension rods and anvils with the micrometer head. Two types of measuring faces are available; with or without carbide tip. (No. 337- 101/301/302/102/303/304 only available with carbide ) The sleeve is rotated to adjust the index line position when setting to a length standard. An inside length

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MITUTOYO-SERIES 137, 337 – EXTENSION ROD TYPE-TUBULAR INSIDE MICROMETERS

Product Overview

The Mitutoyo Series 337 Extension Rod Type-Tubular Inside Micrometers (Digematic LCD models) allow for a wide range of inside measurements by combining interchangeable extension rods and anvils with a high-precision micrometer head. Featuring carbide-tipped measuring faces, these instruments utilize a rotatable sleeve to adjust the index line position when setting to a length standard.

Key Features & Capabilities

Wide Measurement Range: Achieved through the combination of extension rods, anvils, and the micrometer head.
Carbide-Tipped Measuring Faces: Standard on models 337-101, 337-301, 337-302, 337-102, 337-303, and 337-304 for enhanced wear resistance and durability.
IP65 Water-Resistance: Enables use in machining environments exposed to cutting fluid, coolant, or water jets (Level 6 dust-proof, Level 5 water-protected against water jets).
Large-Character LCD Display: Clear digital readout for error-free measurement logging.
Preset Function: Storage of 2 preset values for easy reference setting against an inside length standard.
Function Lock: Prevents accidental changing of the reference setting during measurement operations.
Data Output Port: Enables integration into statistical process control (SPC) systems or networked measurement setups.
Interface Compatibility: Supports Interface Input Tools for direct conversion of measurement data to keyboard signals for off-the-shelf spreadsheet software such as Excel.
Adjustable Sleeve: Sleeve can be rotated to align the index line position when setting to length standards.

Technical Specifications

Metric Models (Digematic LCD)

Order No.	Range	Resolution	Micrometer Head Stroke	Extension Rods (Qty & Size)	Display Unit
337-101	200 – 225mm	0.001mm	25mm	—	200 – 225mm
337-301	200 – 1000mm	0.001mm	25mm	6 pcs (25, 50, 100 [2 pcs.], 200, 300mm)	200 – 225mm
337-302	200 – 1500mm	0.001mm	25mm	7 pcs (25, 50, 100, 200, 300mm [3 pcs.])	200 – 225mm

Inch/Metric Models (Digematic LCD)

Order No.	Range	Resolution	Micrometer Head Stroke	Extension Rods (Qty & Size)	Display Unit
337-102	8” – 9”	.0001" / 0.001mm	1"	—	8” – 9”
337-303	8” – 40”	.0001" / 0.001mm	1"	6 pcs (1", 2", 4" [2 pcs.], 8", 12")	8” – 9”
337-304	8” – 60”	.0001" / 0.001mm	1"	7 pcs (1", 2", 4", 8", 12" [3 pcs.])	8” – 9”

Accuracy

$\pm (3 + \text{number of rods} + \text{maximum measurement length}/50) \mu m$ (fraction rounded up) (Excluding quantizing error for Digematic models)

Functions

Zero-setting
Origin restoration
Data hold
2-point preset
Function lock
Automatic power ON/OFF
Error alarm

Battery & Scale Type

Battery: SR44 (1 pc.), Code No. 938882 included for initial operational checks
Battery Life: Approx. 1.2 years under normal use
Scale Type: Electromagnetic induction-type rotary encoder