Description
Product Overview
The Graybean 30‑Piece Surface Roughness Gauge Set is a comprehensive reference collection designed for precise surface finish evaluation. Each comparator block is forged from high‑quality 45# carbon steel and receives a protective anti‑corrosion coating, ensuring long‑term dimensional stability. The set spans the full Ra range from 0.05 mm to 12.5 mm, providing clear visual standards for both coarse and fine finishes. Packaged in a compact 7.5 × 4.8 × 1.5 inch box, the set weighs only 15.2 ounces, making it portable for on‑site inspections. ![[Product front view showing all components]](https://www.frozenyogurtzone.store/wp-content/uploads/2026/05/d426ca41b6f74161869e0dc2d8e2326c.jpg)
Usage
This gauge set is ideal for a variety of industrial and educational environments. In manufacturing, quality‑control technicians use the blocks to verify the surface finish of turned, milled, or ground components, ensuring compliance with engineering specifications. Metrology labs employ the set as a calibration reference for profilometers and other surface‑measurement instruments. Additionally, engineering instructors use the visual standards to demonstrate roughness concepts to students, bridging theory with hands‑on observation.
Why Choose Us
Graybean combines decades of metrology expertise with meticulous material selection. The 45# carbon steel provides a balance of hardness and wear resistance, while the anti‑corrosion treatment protects the blocks from humidity and oil exposure common in workshop settings. Each block is laser‑etched with its Ra value, eliminating guesswork and reducing inspection time. Our commitment to quality is backed by a 12‑month warranty and responsive technical support, ensuring you receive reliable performance throughout the product’s lifespan.
Key Features
- Complete Ra 0.05‑12.5 mm range eliminates the need for multiple reference kits.
- High‑grade 45# carbon steel maintains accuracy after years of heavy use.
- Anti‑corrosion coating protects against oil, coolant and humidity.
- Laser‑etched labels provide instant identification for fast visual checks.
- Dedicated customer support and a 12‑month warranty ensure peace of mind.
FAQ
What is the material of the comparator blocks?
All blocks are made from 45# carbon steel and receive an anti‑corrosion protective coating.
Can the set be used with digital profilometers?
Yes, the blocks serve as a physical reference to verify and calibrate digital profilometer readings.
How should the blocks be stored to maintain accuracy?
Store them in a dry environment, preferably in the original case, and avoid direct contact with abrasive chemicals.
Is the set suitable for educational purposes?
Absolutely. The clear visual gradation makes it an excellent teaching aid for engineering and machining courses.
What warranty does Graybean provide?
Graybean offers a 12‑month limited warranty covering manufacturing defects and provides technical assistance throughout that period.




Graigar Digital Roughness Gauge SRT-6223+ with Tungsten Tip
CS Osborne 12" Wing Divider Model 57018 Machined Steel Caliper
Reviews
There are no reviews yet.