Gar C9 Surface Roughness Comparator Microfinish Scale with 9 Replicas

Description

Product Overview

The Gar C9 Surface Roughness Comparator is a precision engineered tool designed for accurate surface texture evaluation in industrial and scientific environments. Constructed from corrosion‑resistant electroformed nickel, the comparator replicates nine distinct cast surface finishes ranging from 20 to 900 microinches. Each specimen is a faithful reproduction of real‑world cast surfaces, providing a tactile reference that can be directly compared to a workpiece using a simple fingernail test. The device measures 4½” by 3¼” and is housed in a rugged leatherette case that includes engineering data sheets and usage instructions. Its compact size and durable construction make it ideal for on‑site inspections, laboratory quality control, and educational demonstrations.

Usage

To use the Gar C9 Comparator, place the scale adjacent to the component whose surface finish you wish to evaluate. Slide the comparator until the rectangle representing the desired roughness level aligns with the workpiece. Gently draw a fingernail across both surfaces at a right‑angle to any tool marks. If the tactile sensation matches, the surface finish of the workpiece corresponds to the selected reference specimen. This method requires no power source, making it suitable for field inspections, maintenance checks on machinery, and routine quality audits in manufacturing plants. The comparator works equally well on metal, plastic, and composite materials, providing a universal solution for surface assessment.

Why Choose Us

Gar Electroformers brings over a decade of expertise in precision surface measurement tools. The C9 comparator stands out because of its electroformed nickel construction, which offers superior durability and resistance to wear compared to plastic or painted metal alternatives. Each of the nine reference specimens is calibrated to industry standards, ensuring repeatable and trustworthy results. The included leatherette case protects the tool during transport and storage, while the comprehensive data sheet guides users through proper technique and interpretation of results. Additionally, Gar provides responsive technical support and a satisfaction guarantee, reinforcing confidence in long‑term performance.

Key Features

• Nine calibrated nickel replicas covering 20‑900 µin surface roughness range
• Corrosion‑resistant electroformed nickel construction for lasting durability
• Compact rectangular design (4½” × 3¼”) fits easily in tool kits and pockets
• Simple tactile comparison method requires no power or additional equipment
• Includes leatherette case, data sheet, and dedicated after‑sales technical support

FAQ

How do I interpret the tactile feedback when using the comparator?

When you draw a fingernail across both the reference specimen and the workpiece, the feel should be identical if the surface roughness matches. A smoother feel indicates a finer finish, while a rougher sensation suggests a coarser texture than the selected reference.

Can the Gar C9 be used on non‑metallic materials?

Yes. The comparator works on plastics, composites, and coated metals. The tactile principle remains the same, allowing you to assess surface texture regardless of material type.

What maintenance is required to keep the comparator accurate?

Keep the specimens clean and free of debris. Wipe the surfaces with a soft, lint‑free cloth after each use. Store the tool in the supplied leatherette case to protect it from moisture and mechanical damage.

Is calibration required for the C9 comparator?

No additional calibration is needed. The nine reference specimens are factory‑calibrated to industry standards and remain stable over the product’s lifetime when handled properly.

What warranty or support does Gar Electroformers provide?

Gar offers a one‑year limited warranty covering manufacturing defects and provides responsive technical assistance via phone or email to help users achieve accurate measurements.