Precision Measuring Instruments
Manufacturer in India

Luthra Precision Instruments Pvt. Ltd. is a trusted manufacturer of precision measuring and inspection instruments since 1970. Our products are designed to deliver consistent accuracy, long service life, and dependable performance for industrial inspection and quality control applications.

Granite Surface Plate

Granite surface plates are precision reference tools used for inspection, measurement, and layout applications where high accuracy and dimensional stability are essential. At Luthra Precision Instruments Pvt. Ltd., we manufacture granite surface plates using high-quality natural granite, ensuring excellent flatness, wear resistance, and long-term accuracy for industrial and metrology applications. These plates are ideal for laboratory environments, quality control departments, and precision inspection setups.

Product Specifications

Parameter	Details
Plate Size	Upto 6000 mm
Thickness	60 mm – 200 mm
Accuracy Grade	Grade 0
Granite Color	Black
Unit Size	250 x 250 mm upto 6000 mm
Surface Finish	Hand Lapped
Support Type	Fabricated Stand
Stand	MS Fabricated
Material	Granite
Brand	Luthra
Top Accessories	Steel Inserts, T Slot Insert

Key Features

High flatness accuracy (Grade 0)
Hand-lapped surface for precision measurement
Low thermal expansion for stable readings
Non-magnetic and corrosion-resistant
Wear-resistant natural granite surface
Minimal maintenance requirement
Suitable for precision inspection and metrology use

Applications

Dimensional inspection and measurement
Layout and marking operations
Flatness and alignment checking
Supporting inspection instruments and gauges

Flatness Tolerance Specifications (IS 7327:2003 – Grade 0)

Size (mm)	Flatness Tolerance (µm)
250 x 250	3.5
300 x 300	3.5
400 x 400	4.5
630 x 400	5.0
630 x 630 x 80	5.0
1000 x 630 x 150	6.0
1000 x 1000 x 150	7.0
1200 x 900 x 150	7.0
1600 x 1000 x 200	8.0
2000 x 1000 x 200	9.5

Why Choose Granite Surface Plates

Granite surface plates are preferred in precision environments due to superior dimensional stability, resistance to rust and corrosion, minimal effect from temperature variations, and long-lasting accuracy compared to metal surfaces.

Industries We Serve

Automotive and auto component manufacturing
CNC machining and tool rooms
Engineering and fabrication units
Quality control and calibration laboratories

Precision Measuring Instruments
Manufacturer in India

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Granite Surface Plate

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Precision Measuring Instruments Manufacturer in India

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