Mitutoyo 2991A-10 | Back Plunger Dial Indicator | 0.008 in Range, 0.0001 in Graduation
Part No. 2991A-10 | Range 0.008 inch | Graduation 0.0001 inch | Back Plunger | One Revolution
Product Overview
The Mitutoyo 2991A-10 is an ANSI/AGD-type Series 2 plunger dial gauge with a back plunger design, one-revolution dial, 0.0001 inch graduation and a 0.008 inch measuring range. It is designed for high-resolution comparative inspection where very small deviations need to be measured accurately.
Made to American Gage Design dimensions, the 2991A-10 is suitable for use with compatible inspection stands, holders and fixtures. With 0.0001 inch graduation over 0.008 inch of travel, it provides fine resolution for checking precision-ground parts, setting gauges and comparing components against a master.
The back plunger design positions the plunger at the rear of the gauge, perpendicular to the dial, making it suitable for confined mounting spaces while keeping the dial visible to the operator. Its one-revolution dial displays the full 0.008 inch range in a single pointer revolution, helping simplify readings during precision inspection.
The gauge is listed with shockproof construction, a balanced dial and a carbide-tipped contact point for wear resistance. Its mechanical movement is designed for dependable day-to-day use in inspection and workshop applications.
Need a different resolution or travel? See the Mitutoyo 2109AB-11.
Key Benefits
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0.0001 inch graduation for fine, high-resolution readings
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0.008 inch measuring range for precision comparative checks
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ANSI/AGD standard design for compatibility with common stands, holders and accessories
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Back plunger design for mounting in confined spaces
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One-revolution dial shows the full range in a single turn
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Shockproof construction and carbide-tipped contact point
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Genuine Mitutoyo part supplied and supported locally in Saudi Arabia
+966 569 289 544 for pricing and stock availability.
Who This Product Is Best For
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Quality-control inspectors requiring high resolution for comparative measurement
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Engineers mounting a gauge in tight spaces on machines and fixtures
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Maintenance teams replacing an existing ANSI/AGD back plunger gauge with a like-for-like part
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Calibration labs and buyers standardising their inspection equipment on Mitutoyo
How to Use It
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Mount the gauge securely in its holder or fixture, keeping the plunger square to the surface being measured.
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Pre-load the plunger slightly, then rotate the bezel to set zero against a reference surface or master.
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Move the part or gauge across the feature and read the deviation directly from the dial.
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Retract the plunger gently after use and store the gauge clean, dry and protected.
Frequently Asked Questions
What is the Mitutoyo 2991A-10 dial gauge used for?
It is used for high-resolution comparative inspection where very small deviations matter. The 0.0001 inch graduation and 0.008 inch range make it suitable for fine-tolerance inspection work.
What are the graduation and measuring range of the 2991A-10?
The Mitutoyo 2991A-10 has a 0.0001 inch graduation and a 0.008 inch measuring range.
What does ANSI/AGD mean on a dial gauge?
ANSI/AGD refers to the American Gage Design standard for dial indicators. Gauges built to this standard use common dimensions, allowing compatibility with many stands, holders and accessories.
What is a back plunger dial gauge?
On a back plunger gauge, the plunger extends from the rear of the gauge, perpendicular to the dial. This configuration makes it suitable for confined spaces while keeping the dial face visible to the operator.
What does a one-revolution dial mean?
The pointer covers the full 0.008 inch measuring range in a single revolution. This eliminates the need to track multiple pointer revolutions and can simplify reading during inspection.
Which should I choose: the 2991A-10 or the 2109AB-11?
The choice depends on the resolution and measuring travel required. The 2991A-10 provides 0.0001 inch graduation over a 0.008 inch range, while the 2109AB-11 provides 0.001 mm graduation over a 1 mm range.
Is the genuine Mitutoyo 2991A-10 available in Saudi Arabia?
Yes. General Tech Services LLC supplies genuine Mitutoyo 2991A-10 dial gauges in Saudi Arabia. Call +966 569 289 544 for pricing, lead time and current availability.
Request Pricing and Availability
For genuine Mitutoyo 2991A-10 dial gauges in Saudi Arabia, contact General Tech Services LLC for current pricing and availability.
+966 569 289 544
