Value Collection 640-0100 Inspection Surface Plate B Grade

Product Description

The VALUE COLLECTION 640-0100 is a B-grade granite inspection surface plate used as a precision reference flat for layout, inspection, and quality-control work in toolrooms and machine shops. Measuring 12 inches long, 9 inches wide, and 3 inches thick, it provides a stable, flat reference datum for checking part geometry, scribing layouts, and setting up inspection fixtures. At 33.75 pounds, the plate is substantial enough to remain stable on a bench during use. The no-ledge configuration gives an unobstructed work surface across the full top face.

B-grade surface plates are the standard toolroom-grade reference flat for general inspection tasks that do not require the tighter flatness tolerances of A or AA grade. This plate suits dimensional layout, incoming inspection, and shop-floor quality checks in metalworking, fabrication, and machining environments. It is appropriate for use with height gauges, dial indicators, V-blocks, angle plates, and similar layout and inspection tooling.

Key Features

• B toolroom grade — suitable for general shop inspection and layout work
• No-ledge design provides full, unobstructed top surface for workpieces and tooling
• 12 inches long by 9 inches wide working area
• 3 inches thick for rigidity and resistance to deflection under load
• 33.75-pound mass provides stable bench-top performance

Compatibility

Designed as a standard B-grade inspection surface plate for use with conventional layout and inspection tooling including height gauges, dial indicators, angle plates, and V-blocks in toolroom and general shop environments.

Installation Notes

Surface plates should be installed on a flat, level bench or stand capable of supporting the plate weight without flex or rocking. Clean the plate surface before and after use to prevent abrasive contamination that can degrade flatness over time. Avoid placing heavy impact loads or grinding debris directly on the surface. Periodic recalibration by a qualified metrology technician is recommended to verify flatness to grade specification.