Luthra Brand Granite Surface Plate — 300x300x50 mm

Luthra Granite Surface Plates are used as a precise, stable reference plane for inspection, layout work, and calibration of measuring instruments in high-precision metrology and quality control applications.

All our listed Luthra Granite Surface Plates are O Grade, ensuring high flatness and accuracy for precision tasks.

Granite offers superior dimensional stability, is corrosion-proof, non-magnetic, and has a lower thermal expansion coefficient compared to cast iron, making it ideal for high-precision measurement environments.

A mounting stand is not included by default but is available as an optional accessory. We offer options for stands with leveling screws and pads at an additional cost, which you can see on the product page.

Clean the surface with a mild soap and water solution to remove oils and debris. Always keep the plate covered when not in use to protect it from scratches and dust. Avoid dropping heavy or sharp objects onto the surface.

Yes, each Luthra Granite Surface Plate is supplied with a calibration certificate traceable to national standards, confirming its grade and accuracy.

Yes, we offer pan-India delivery for all our surface plates. Shipping is handled with extreme care to ensure the plate arrives safely at your facility.

Absolutely. We provide a proper GST invoice for all purchases, allowing you to claim input tax credit.

The 300x300x50 mm plate is ideal for small workshops, hobbyists, or for inspecting small components where space is limited. It's the most compact and affordable option.

This is a great general-purpose size for small to medium-sized parts. It offers a bit more surface area than the base model, suitable for most common workshop tasks.

Choose the 630x400x80 mm plate when you need to inspect rectangular parts or require a longer working length for calibration tasks.

This square plate is a versatile choice for medium-sized components, offering a generous and balanced surface area for a variety of inspection and layout jobs.

The 900x600x100 mm variant is suited for professional machine shops and quality control departments that handle medium to large components requiring a stable and larger reference surface.

This model provides a large surface area and increased thickness for greater stability, making it suitable for inspecting larger, heavier parts or for use as a base for complex gauging setups.

The 1000x1000mm square plate is for large-scale metrology, ideal for checking the flatness of large castings, fabrications, or machine beds.

This large-format plate is designed for heavy industrial applications, such as automotive or aerospace manufacturing, where very large and heavy components need to be inspected with high precision.

This is one of the largest standard plates available, intended for specialized heavy engineering industries for inspecting very large fabrications, machine assemblies, and gantry systems.

The primary difference is the size and weight. Larger plates can accommodate larger workpieces. They are also thicker to maintain the required flatness and stability over a larger area, preventing deflection under the weight of the part being inspected.

Consider the largest component you need to measure. The surface plate should be large enough to accommodate the full footprint of the part with some extra room for tools and gauges. Also, consider the weight of your parts and the stability required.

Yes, for a given size, a thicker plate is more rigid and less prone to deflection, providing a more stable and accurate reference surface. The thickness-to-length ratio is a key factor in a surface plate's quality.