Dimensions
CALIBRATION FACILITY
The MSIR INDIA Dimensional Metrology Laboratory strictly adheres to the ISO 1 international standard reference temperature of 20.0 °C. Equipped with Renishaw XL-80 laser interferometers, Grade 0 ceramic and tungsten carbide gauge block masters, Talyrond roundness testers, and automated optical micrometers, we deliver dimensional verification for aerospace tooling and precision machining.
LASER RESOLUTION
0.0001 mm (0.1 µm)
Renishaw XL-80
MEASURING RANGE
0 to 1,000 mm
Linear Metrology
FLATNESS STANDARD
λ / 20 (0.03 µm)
Monochromatic Flat
CHAMBER TEMP
Strict 20.0 °C
ISO 1 Standard Baseline
Laser Optical Interference Fringe & Micron Grating Simulator
MEASURED TELEMETRY
25.00012
EXPANDED UNCERTAINTY (k=2)
±0.05 µm
TRACEABILITY
NPL India
PARAMETER TUNING
Evaluated as per GUM (JCGM 100:2008) guidelines with complete Type A and Type B expanded uncertainty analysis.
Primary Reference Standards
Our dimensions capabilities are anchored by primary standards directly calibrated by NPL India and BIPM-recognized National Metrology Institutes.
Renishaw XL-80 Laser Interferometer
HeNe Laser Length Standard
Frequency-stabilized helium-neon laser system with automated environmental compensation for air temperature, pressure, and relative humidity.
Technical Highlights:
Mitutoyo Grade 0 Gauge Block Sets
Ceramic & Steel Master Gauge Blocks
Ultra-flat wringing gauge blocks used for comparative mechanical calibration of micrometers, calipers, and height gauges.
Technical Highlights:
Dimensions Scope Matrix (CMC)
Calibration & Measurement Capabilities (CMC) accredited under ISO/IEC 17025:2017. Uncertainties expressed at an expanded confidence level of approx. 95.45% (k=2).
| Discipline / Measurand | Calibration Range | Test Condition | Expanded CMC (±) | Master Reference Standard | Test Standard / Method |
|---|---|---|---|---|---|
| Gauge Blocks & Length Standards | 0.5 mm to 1,000 mm | Monochromatic Interferometer & Comparator | ± (0.05 + 0.5L) µm | Renishaw Laser Interferometer + Grade 0 Blocks | Interferometry & mechanical comparison (ISO 3650) |
| External/Internal Micrometers, Calipers, Height Gauges | 0 to 1,000 mm | Strict 20.0 °C Thermal Equilibrium | ± 1.2 µm to ± 8.0 µm | Master Gauge Blocks + Optical Flats | Step check and flatness evaluation (IS 2967 / ISO 13385) |
| Surface Plates (Granite & Cast Iron) | Up to 3,000 mm × 2,000 mm | Electronic Differential Levels / Autocollimator | ± 1.5 µm overall planarity | Wyler Precision Electronic Inclination Levels | Union Jack grid method as per IS 7327 / BS 817 |
Instruments Serviced & Calibrated
We calibrate all major industrial, pharmaceutical, aerospace, and research-grade instrumentation.
Vernier & Digital Calipers
Depth, internal, external calipers up to 2,000 mm
Micrometers (Outside, Inside, Depth)
Mechanical and digital micrometers
Dial Indicators & Bore Gauges
Plunger and lever dial test indicators
Height Gauges & Profile Projectors
Electronic height masters and optical comparators
Granite Surface Plates & Straightedges
On-site computerized planarity & flatness mapping
Climate & Environment
Designed for Zero Drift
Every measurement at MSIR INDIA is conducted under strictly monitored and auditable environmental controls adhering to ISO/IEC 17025:2017:
UNBROKEN CHAIN OF TRACEABILITY (ISO/IEC 17025)
BIPM SI Meter Definition (Speed of Light c in Vacuum)
NPL India Iodine-Stabilized HeNe Laser Primary Standard
MSIR Master Renishaw XL-80 Laser Interferometer (NABL CC-2891)
Client Precision Gauge Blocks, CMMs, and Micrometers
Book Dimensions Calibration
Get an instant fee estimate for your calibration scope or book an immediate laboratory slot with our certified metrologists.
INDICATIVE CALIBRATION FEE
₹ 3,000 + GST
Explore All 12 Metrology Laboratories
MSIR INDIA operates 12 specialized NABL-accredited metrology domains in Chennai.