---
product_id: 382973619
title: "6 x 8 x 2 Grade B O Ledge Inspection Granite Surface Plate"
brand: "hhip"
price: "฿13186"
currency: THB
in_stock: true
reviews_count: 13
category: "Hhip"
url: https://www.desertcart.co.th/products/382973619-6-x-8-x-2-grade-b-o-ledge-inspection
store_origin: TH
region: Thailand
---

# ±0.0001" precision flatness Granite harder than steel Grade B certified accuracy 6 x 8 x 2 Grade B O Ledge Inspection Granite Surface Plate

**Brand:** hhip
**Price:** ฿13186
**Availability:** ✅ In Stock

## Summary

> 🪨 Elevate your precision game with rock-solid accuracy!

## Quick Answers

- **What is this?** 6 x 8 x 2 Grade B O Ledge Inspection Granite Surface Plate by hhip
- **How much does it cost?** ฿13186 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/382973619-6-x-8-x-2-grade-b-o-ledge-inspection)

## Best For

- hhip enthusiasts

## Why This Product

- Trusted hhip brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rock-Solid Durability:** Granite surface harder than steel, non-magnetic & wear-resistant
- • **Ultra-Precise Flatness:** Precision ground to ±0.0001" for flawless measurements
- • **Certified Quality Assurance:** Meets Federal Specs GGG-P-463C with inspection certificate
- • **Versatile Workshop Essential:** Ideal for machinists, engineers & DIY pros for inspection & assembly
- • **Stable & Reliable Work Surface:** Perfect for tool calibration, layout, and production checking

## Overview

The HHIP 6" x 8" x 2" Granite Surface Plate Grade B offers unmatched flatness with ±0.0001" accuracy, certified to Federal Specifications GGG-P-463C. Crafted from durable, non-magnetic granite harder than steel, it provides a stable, wear-resistant surface ideal for precision measurement, inspection, and assembly tasks in professional and DIY workshops.

## Description

HHIP 6 X 8 X 2" Granite Surface Plate Grade B 0 Ledge The top surface of this plate is precision ground to achieve a high degree of flatness and the accuracy is +/-0001". It is a Grade B (Grade 1) plate. Granite surface plates meet or exceed Federal Specifications GGG-P-463C and it includes a certificate of inspection. (Note that these are not NIST traceable.) Granite plates are used for measuring the flatness and squareness of other objects, laying out parts, calibrating instruments, setting up tools, checking parallelism and perpendicularity, and measuring heights with the use of a height gage. They are also used as a work surface for assembling, inspecting, and marking parts. Non-magnetic and non-conductive. Surface plates are offered by HHIP in various sizes, with different levels of flatness and accuracy and are checked by an auto collimator for overall accuracy assurance.

Review: Extremely Flat! - The smooth side is flat to 0.001" of an inch in 5 vertical and 5 horizontal cross sections and 2 diagonal cross sections from corner to corner and edge to edge with calibrated gauge. rough side is flat to about 0.0015" - 0.002" of an inch with an unfortunate falloff on one corner that is around 0.0035" of an inch on the corner. The taper is two inches from the corner in both direction making an even triangle low gradient from 0.0015 at a diagonal line to the lowest point at the corner 0.0035". This is still exceptional for my use as I only need one side to be perfectly flat. It will not be sitting flat side up during use. They package this block in a quarter inch wooden box with little wiggle room for safe shipping. My block came in perfect condition and as stated by the spec I ordered. The material is genuine black granite, and at least one side is within a super flat spec. Overall I strongly suggest getting this! Specially if you're going to be doing what I am, and decking an engine head at home like a mad man instead of just getting it machined.
Review: Pleased with this purchase - Item arrived in a cardboard outer box with heavy plastic strapping, inside was a wooden box. The rock itself is in perfect condition, I have no means of verifying the flatness of the surface, my intent is not a home metrology lab, but a nice flat surface to provide final dressing of woodwork tools. This will do that task very nicely. It’s pretty hefty for its size, nearly 40 pounds, so make sure to be safe when moving it around. I’m quite satisfied with it, for the price.

## Features

- The top surface of this plate is precision ground to achieve a high degree of flatness and the accuracy is +/-.0001". Granite surface plates provide an unmatched level of flatness for accurate measurement, inspection, and assembly across various applications. Meets Federal Specifications GGG-P-463C. Inspected for accuracy using an autocollimator.
- Granite has many advantages. Incredibly Flat - Precision ground for accuracy. Durable and Stable - Harder than steel, non-magnetic, and resistant to wear. Versatile - Ideal for Machinists and Engineers for measuring, inspecting, and calibrating tools. Quality Control - Ensuring accuracy in manufacturing processes.
- DIY Enthusiast - Woodworking, metalworking, jewelry making, leather crafting, and more. Shop grade is a practical and economical choice for everyday workshop tasks. This grade is well-suited for: General workshop use - Providing a reliable surface for various tasks.
- Assembly - Ensuring accurate alignment and fit of components. Production checking - Verifying dimensions and tolerances during manufacturing. Hobbyist projects - Providing a stable and accurate surface for DIY tasks.
- Granite surface plates provide an unmatched level of flatness for accurate measurement, inspection, and assembly across various applications. Includes Certificate of Inspection that is NOT NIST TRACEABLE.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.6 out of 5 stars 543 Reviews |

## Images

![6 x 8 x 2 Grade B O Ledge Inspection Granite Surface Plate - Image 1](https://m.media-amazon.com/images/I/61PBRGJgWBL.jpg)
![6 x 8 x 2 Grade B O Ledge Inspection Granite Surface Plate - Image 2](https://m.media-amazon.com/images/I/61UadJDe3TL.jpg)
![6 x 8 x 2 Grade B O Ledge Inspection Granite Surface Plate - Image 3](https://m.media-amazon.com/images/I/61C1l2AJD8L.jpg)
![6 x 8 x 2 Grade B O Ledge Inspection Granite Surface Plate - Image 4](https://m.media-amazon.com/images/I/51Oz6EFMxAL.jpg)
![6 x 8 x 2 Grade B O Ledge Inspection Granite Surface Plate - Image 5](https://m.media-amazon.com/images/I/51la+NLsskL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Extremely Flat!
*by D***R on June 1, 2026*

The smooth side is flat to 0.001" of an inch in 5 vertical and 5 horizontal cross sections and 2 diagonal cross sections from corner to corner and edge to edge with calibrated gauge. rough side is flat to about 0.0015" - 0.002" of an inch with an unfortunate falloff on one corner that is around 0.0035" of an inch on the corner. The taper is two inches from the corner in both direction making an even triangle low gradient from 0.0015 at a diagonal line to the lowest point at the corner 0.0035". This is still exceptional for my use as I only need one side to be perfectly flat. It will not be sitting flat side up during use. They package this block in a quarter inch wooden box with little wiggle room for safe shipping. My block came in perfect condition and as stated by the spec I ordered. The material is genuine black granite, and at least one side is within a super flat spec. Overall I strongly suggest getting this! Specially if you're going to be doing what I am, and decking an engine head at home like a mad man instead of just getting it machined.

### ⭐⭐⭐⭐⭐ Pleased with this purchase
*by M***T on April 29, 2026*

Item arrived in a cardboard outer box with heavy plastic strapping, inside was a wooden box. The rock itself is in perfect condition, I have no means of verifying the flatness of the surface, my intent is not a home metrology lab, but a nice flat surface to provide final dressing of woodwork tools. This will do that task very nicely. It’s pretty hefty for its size, nearly 40 pounds, so make sure to be safe when moving it around. I’m quite satisfied with it, for the price.

### ⭐⭐⭐⭐⭐ Excellent quality and perfect for a leather stamp work base
*by K***S on December 20, 2023*

As the title says, this was a fabulous purchase and is perfect for my leather work. The photo doesn't show it's thickness as I've countersunk it with just a small amount raised above the desk surface. I will start by saying it's HEAVY. I don't think I realized just how heavy this would be and even lowering it into the cutout compartment area was a huge feat. I will advise that if you intend to do leather stamp work on this it will require something to absorb the shock underneath. Mine is resting on a foam yoga mat like surface in a build in/converted keyboard tray slide out which we reinforced. This photo shows it with the dusty look it had upon receipt but after one quick cleaning it has not had that look any longer. It's very nicely smoothed. The edges are nice, there are no imperfections and this was just a fabulous purchase! Highly recommended.

## Frequently Bought Together

- HHIP 4401-1597 6" X 8" X 2" Granite Surface Plate, Grade B, 0 Ledge
- WEN 10423 3 x 2 x 1-Inch Steel-Hardened Precision 123 Blocks, Two Pack
- Shars 12" Dial Height Gage 303-4410 R]

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-09-22*