Grade 0 granite platform for sale

GRADE 0 GRANITE PLATFORM FOR SALE

The Ultimate Reference:Laboratory Master-Grade Precision Platform

DEFINING GRADE 0

In the hierarchy of granite precision,Grade 0(often called Master or Reference Grade)represents the pinnacle of achievable flatness and stability.Exceeding the specifications of standard commercial grades(A,B),Grade 0 is engineered for environments where measurement uncertainty must be minimized to its absolute limit.This platform serves as the primary standard for calibrating other inspection tools,validating high-precision manufacturing processes,and conducting critical research.

TECHNICAL SPECIFICATIONS

Flatness Tolerance:≤±0.000005"per foot(≤±0.125µm/m)

Surface Finish:Lapped to 1-3µin Ra(0.025-0.075µm)

Material:Premium,Selected-Fine-Grain Black Granite

Density:>3.0 g/cm³(minimum)

Thermal Expansion Coefficient:5.0-5.8×10⁻⁶/°C

Hardness:7 Mohs

Thermal Conditioning:Minimum 90-day natural stabilization post-machining

Calibration Method:Laser Interferometer with environmental compensation

Repeatability:Sub-micron level across full surface

Available Size&Configuration:

Standard Platform Size:1200mm x 800mm x 250mm(47"x 31"x 10")

Custom Sizes:Available up to 2000mm x 1500mm(79"x 59")

Top Surface:Precision lapped Grade 0

Mounting:(4)Isolating,stainless steel,micrometer-adjustable feet

Edge Treatment:Safety bevel on all edges;two reference edges ground square within 2 arc-seconds

CERTIFICATION&DOCUMENTATION

This is not just a sale of equipment;it is the transfer of a certified measurement artifact.

Included with Purchase:

ISO/IEC 17025 Accredited Calibration Certificate issued by our in-house laboratory.

Full 3D Volumetric Flatness Map generated by laser interferometer,showing contour lines at 0.1-micron intervals.

NIST-Traceable Material Certification confirming density,hardness,and structural integrity.

As-Found/As-Left Data from final verification.

Recommended Environmental Conditions report for optimal performance.

Chain of Custody&Provenance Documentation.

INTENDED APPLICATIONS

National Metrology Institutes&Standards Laboratories:As a primary or secondary reference standard.

Aerospace&Defense Prime Contractors:For calibrating master tooling,qualifying CMMs,and first-article inspection of flight-critical components.

Semiconductor Capital Equipment Manufacturers:As a reference plane for wafer stage calibration and lithography system assembly.

University&Corporate Research Labs:For nanotechnology,advanced optics,and precision engineering research requiring sub-micron flatness.

High-End Optical Manufacturers:For testing and assembling interferometer flats,telescope mirrors,and laser system components.

Precision Bearing&Guideway Manufacturers:For final qualification of surface geometry.

PLATFORM HIGHLIGHTS

Monolithic Construction:Machined from a single,flaw-screened granite block to ensure isotropic properties.

Stress-Relieved Design:Internal geometry minimizes mass while maximizing stiffness,designed via Finite Element Analysis(FEA).

Isolated Mounting System:Proprietary feet decouple the platform from floor vibrations and stresses.

Stability Guarantee:Guaranteed flatness stability for 24 months under recommended environmental conditions.

Cleanroom Compatible:Can be manufactured and certified in Class 1000 or better cleanroom conditions upon request.

PACKAGE INCLUDES

Grade 0 Granite Platform

Set of(4)Precision Adjustable Isolation Feet

Transportation Crate with Environmental Monitoring Logger

Full Certification Portfolio(as above)

Premium Protective Breathable Cover

Technical Manual&Installation Guide

INVESTMENT&VALUE

Price:Upon Application(Request Formal Quotation)

Lead Time:90-120 days from order to certified delivery

Why the Investment is Justified:

Eliminates Calibration Outsourcing:Becomes your in-house primary standard.

Reduces Measurement Uncertainty:Improves the accuracy of your entire measurement chain.

Future-Proofs Your Capability:Meets the most stringent requirements of next-generation manufacturing.

Asset Appreciation:A properly maintained Grade 0 platform retains its technical and financial value for decades.