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Black Granite Square Master, 6 Faces Accuracy Square Angle, Any Size can be Customizable (300×300×50)

4.4 (1) Write Review
Free shipping on orders over $29.99

$381.59

$ 99 .00 $99.00

In Stock

About this item

  • Unrivaled precision: Manufactured to A Grade and DIN 876/00 standards. Fully stress relieved prior to production and double ground by machine and hand for impeccable precision.
  • Certified Excellence: Each product is factory calibrated and tested and issued with an official calibration certificate to ensure the highest standards are met.
  • Excellent Craftsmanship: Produced under strict quality control by skilled craftsmen in the world's leading granite fabrication centers.
  • Unrivaled protection: Extremely strong and shock-resistant. Securely packed in thick foam and secured in an aircraft-grade wooden crate.
  • Trustworthy Support: our dedicated team guarantees a professional service to resolve any quality issues.


Product Description

Product Specification

Accuracy According to A Grade (DIN876/00)
Shore Hardness 78
Density 3000-3300kg/m³
Water Aborption 0.02mass%
Flexural Strength 25.2MPa
Compressive Strength 256-258 MPa
Raw Material Granite
Color Black
Manufacturer Qishenghua ( Abbreviated as ”QSH“ )
Package Aviation Grade Wooden Box
Store Main Picture

Who are we?

Welcome to Qishenghua Precision (QSH) – Your Trusted Supplier of High-Quality Granite Precision Squares

At QSH, we are dedicated to providing top-tier granite precision measuring tools at unparalleled value. Each of our products is meticulously crafted with a focus on accuracy and durability, ensuring reliable performance for all your measurement needs. Whether you're in manufacturing, machining, or engineering, our tools are designed to help you achieve precision effortlessly.

We believe that high-quality tools should be affordable, which is why we strive to offer the best value for money to customers around the world. From our expertly calibrated granite squares to our precision-crafted measuring instruments, every product meets strict industry standards and is built for long-lasting reliability.

I’m Tony, and I’m here to contribute to your success!


Ham Radio Guy
Reviewed in the United States on April 1, 2025
This "Granite Master Square" shipped with a test report showing that it doesn't even meet its own design specifications. It shows a surface flatness being specified at 3 microns and as shipped it was measured at 19 microns in their own test report. Why would a a company ship their own product with a test report showing it doesn't meet their own specifications and then expect it to be received in a positive light by the customer? At least they were honest about it. That's the only reason I can give one star.