Mitutoyo 521-103 | Dial Indicator | Calibration Tester | Series 521 | Metric | Graduation 0.2 µm | Range 0 to 1 mm | Mass 7 kg
Part No. 521-103 | Range 0–1 mm | Graduation 0.2 μm
General Tech Services LLC — Genuine Mitutoyo Distributor, Kuwait +965 9807 4888
Product Overview
The Mitutoyo 521-103 is a Series 521 dial indicator calibration tester designed to verify the accuracy and repeatability of dial indicators. It provides a fine 0.2 μm graduation across a 0–1 mm range, giving calibration and quality-control teams a precise reference for comparing indicator readings at defined measurement points.
This metric-version tester is suited to workshops and laboratories that record measurements in millimetres and microns. Its 7 kg mass provides a stable bench setup, helping reduce the influence of movement and vibration during calibration checks. It is suitable for quality-control departments, in-house calibration laboratories, manufacturers and toolrooms that need to verify indicators before use or between external calibrations.
For applications requiring a longer 0–5 mm range, the Mitutoyo 521-105 provides the same 0.2 μm graduation with the extended measuring range.
Key Benefits
■ 0.2 μm graduation for fine reference readings
■ 0–1 mm measuring range for dial indicator verification
■ Metric version for millimetre- and micron-based inspection records
■ 7 kg mass helps provide a stable, low-vibration test setup
■ Suitable for in-house instrument checks between external calibrations
■ Practical solution for calibration laboratories, QC departments and toolrooms
■ Genuine Mitutoyo instrument supplied through General Tech Services LLC, Kuwait
Who This Product Is Best For
■ Calibration laboratories verifying dial indicators and comparative measuring instruments
■ Quality-control departments performing in-house instrument checks
■ Manufacturers working with metric measurement systems
■ Toolrooms checking indicators before precision machining operations
■ Inspection and maintenance teams requiring repeatable bench-top verification
How It Works
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Place the 521-103 on a stable, level bench and allow the tester and indicator to reach a consistent room temperature.
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Secure the dial indicator in the holder with its spindle correctly aligned with the tester's measuring axis.
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Zero the tester and indicator before beginning the calibration check.
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Progressively move the tester through its 0–1 mm range and compare the indicator reading at each selected point.
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Record the observed readings and errors and compare the results with the indicator's applicable accuracy specification.
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Repeat measurements where necessary to confirm repeatability before returning the indicator to service.
Frequently Asked Questions
What is the Mitutoyo 521-103 used for?
The 521-103 is a Series 521 dial indicator calibration tester used to check the accuracy and repeatability of dial indicators. Its 0.2 μm graduation provides a fine reference for comparing indicator readings across the 0–1 mm range.
What are the graduation, range and mass of the 521-103?
The Mitutoyo 521-103 has a 0.2 μm graduation, a 0–1 mm range and a mass of 7 kg.
What does the 0.2 μm graduation mean?
A 0.2 μm graduation represents the fine measurement increment provided by the tester. This allows indicator readings to be compared against a precise metric reference during calibration checks.
Why does the calibration tester have a 7 kg mass?
The mass helps provide a stable bench setup and can reduce the effect of movement and vibration while measurements are being taken.
Which Series 521 tester should I choose?
Select the tester according to the measurement units and travel range required. The 521-103 covers 0–1 mm with a 0.2 μm graduation, while the 521-105 covers 0–5 mm with the same graduation. The Series 521 family also includes inch versions such as the 521-104 and 521-106.
Is the genuine Mitutoyo 521-103 available in Kuwait?
General Tech Services LLC supplies genuine Mitutoyo products in Kuwait. Contact +965 9807 4888 for current pricing, lead time and availability.
Request Pricing & Availability
For the Mitutoyo 521-103, contact General Tech Services LLC for Kuwait pricing and availability.
Call +965 9807 4888 to request a quote.
