INSIZE GEAR TOOTH MICROMETER (CODE – 3291)

Code:

▪Measure DIN863-3
▪Measure over-pin diameter of gears
▪Graduation 0.01mm
▪Ratchet stop
▪Supplied with setting standards (except 0-25mm)
▪Optional accessary: ball tips (code 7391)

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INSIZE GEAR TOOTH MICROMETER (CODE – 3291)

Product Overview

The INSIZE Gear Tooth Micrometer (Code 3291 Series) is a precision measuring instrument designed specifically for measuring the over-pin diameter of gears. Built to comply with DIN863-3 standards, these micrometers provide reliable, high-precision measurement with a graduation of 0.01mm. Each unit features a consistent ratchet stop for repeatable measuring force and is supplied complete with setting standards (excluding the 0-25mm model). Optional interchangeable ball tips (Code 7391) are available as accessories.

Key Features & Capabilities

Standard Compliance: Meets DIN863-3 specifications.
Application: Engineered for accurate measurement over-pin diameter of gears.
Graduation: 0.01mm precision reading scale.
Ratchet Mechanism: Integrated ratchet stop for consistent measuring force and repeatable results.
Calibration Standards: Supplied with setting standards for zero-setting and calibration (applies to ranges above 0-25mm).
Optional Accessories: Compatible with optional ball tips (Code 7391).

Technical Specifications

Model Selection & Dimensional Matrix

Code	Range	Accuracy	L (mm)	b (mm)
3291-25	0-25mm	4µm	67	38
3291-50	25-50mm	4µm	92.4	50
3291-75	50-75mm	5µm	117.6	62
3291-100	75-100mm	5µm	143	70
3291-125	100-125mm	6µm	168.2	82
3291-150	125-150mm	6µm	192	94.5
3291-175	150-175mm	7µm	217	107
3291-200	175-200mm	7µm	242	130
3291-225	200-225mm	8µm	267	142.5
3291-250	225-250mm	8µm	292	155
3291-275	250-275mm	9µm	317	167.5