: What They Are and Why You Need OneIf you're in the market for a new measuring tool, you may have come across black granite surface plates. But what exactly are they, and why do you need one? In this blog, we'll explore the general specifications of black granite surface plates and their benefits.Black granite surface plates are essentially a flat, polished slab of high-quality black granite that's used for precise measuring. They're incredibly durable, non-corrosive, and don't scratch easily, making them ideal for use in harsh environments. Plus, black granite is an excellent thermal conductor, which means it won't expand or contract with temperature changes.General SpecificationsMost black granite surface plates are manufactured to stringent standards to ensure their high level of accuracy. The plates come in various sizes, from small 12-inch squares to massive slabs measuring several feet in length. Some of the general specifications you'll find with these plates include:- Flatness: Typically, black granite surface plates are manufactured to a grade AA flatness tolerance level, which means they're incredibly flat to within 0.0001" or better.- Surface Finish: The plates' surfaces are typically lapped, which is a process that ensures maximum flatness and roughness control. They're polished to a smooth surface finish with a mirror-like appearance.- Stability: Black granite surface plates sit on sturdy steel or cast iron bases that provide stability during measuring. Some of these bases feature leveling screws that allow for precise adjustment of the plate's height.- Weight: The weight of these plates varies depending on the size, with some of the larger models weighing several hundred pounds. This weight adds to their stability and prevents them from shifting during measurements.BenefitsInvesting in a black granite surface plate can bring numerous benefits to your business, especially if you work in a field that requires precise measuring. Here are some of the benefits of using these plates:- Durability: Black granite is one of the most durable materials available, which means these plates can last for decades with proper care and maintenance.- Corrosion Resistant: Black granite doesn't corrode or rust, making it an ideal material for use in harsh environments like factories or machine shops.- Reduced Wear and Tear: The smooth surface of the plates reduces wear and tear on measuring tools like micrometers, calipers, or dial gauges.- Precision: The level of flatness and surface finish provided by black granite surface plates ensures that measurements are highly precise.- Thermal Stability: Black granite is an excellent thermal conductor, meaning it won't expand or contract with temperature changes. This feature ensures that your measurements remain accurate.ConclusionBlack granite surface plates are a reliable and accurate measuring tool suitable for use in various industries. They're durable, corrosion-resistant, and provide precise measurements that can help improve your productivity and quality control. If you're looking for a highly stable, flat, and accurate surface to measure items, you need to invest in a black granite surface plate.
Read More
