DISJEST Surface Roughness Comparator Set 30‑Piece Hardened Steel Ra

Description

Product Overview

The DISJEST Surface Roughness Comparator Set delivers a comprehensive library of 30 precision‑ground steel blocks that represent standard Ra values from 0.05 mm to 12.5 mm. Each block is forged from hardened steel, providing exceptional wear resistance and dimensional stability even after repeated use. The set arrives in a compact, organized case with a clear reference guide that labels each sample for instant identification. Dimensions of the entire kit are 6.3 × 3.15 × 0.59 inches, weighing just 13.6 oz, making it easy to store on a workbench or carry to the shop floor.

Usage

Designed for manufacturing environments, this comparator set is perfect for evaluating machined parts, injection‑molded components, and finished surfaces in automotive, aerospace, and precision engineering applications. Technicians simply place a part against the appropriate steel block to gauge surface texture by sight and touch, enabling rapid acceptance or rejection decisions without the need for expensive instrumentation. The set also serves as an educational tool for training new quality‑control staff on surface finish standards.

Why Choose Us

DISJEST combines decades of metrology expertise with rigorous material selection to produce a comparator that retains its calibrated values over years of service. Each block undergoes a heat‑treatment process that eliminates internal stresses, guaranteeing repeatable results. The included comparison guide is authored by industry specialists, providing clear instructions and best‑practice tips. Backed by a responsive customer‑support team, DISJEST ensures you receive technical assistance and replacement parts if needed.

Key Features

• 30 calibrated steel blocks covering the full Ra 0.05‑12.5 mm range for versatile applications.
• Hardened steel construction resists wear, maintaining accuracy through extensive use.
• Compact, organized case simplifies storage and quick access on the shop floor.
• Clear visual and tactile assessment reduces reliance on costly electronic gauges.
• Dedicated after‑sales support and replacement parts program for peace of mind.

FAQ

How do I select the correct block for my part?

Refer to the included guide, which lists each block’s Ra value and provides visual examples. Match the appearance of your part’s surface to the closest block for an accurate comparison.

Can the blocks be cleaned without affecting accuracy?

Yes. Wipe gently with a lint‑free cloth and a mild solvent. Avoid abrasive cleaners that could alter the surface texture.

What is the warranty period?

DISJEST offers a one‑year limited warranty covering manufacturing defects and material failures.

Is the set suitable for high‑temperature environments?

The hardened steel blocks retain their dimensions up to 200 °C, making them suitable for most industrial temperature ranges.

Do you provide calibration certificates?

Calibration certificates are available upon request for an additional fee, ensuring compliance with ISO‑9001 quality standards.