Starrett Full-Sized Surface Gage with Fully Hardened, Ground and Nicely Finished Stable Steel Base - 9" Spindle Length, 2-7/8 x 2-3/8" Base Size - 257A

The Starrett 257A full-sized surface gauge has a 9” (225 mm) spindle mounted onto a hardened steel base, with a 6” (150 mm) scriber for accurately scribing lines, transferring measurements, and probing surfaces in inspection work. The included scriber is 6” (150 mm) in length and 9/64” (3.6 mm) in diameter, and is held to the spindle by a sliding snug with a knurled, ring-type lock nut for secure positioning. The 9” spindle is 5/16” in diameter. The steel base is hardened, ground, and lapped for a smooth, flat surface, and measures 2-7/8” (72 mm) by 2-3/8” (60 mm). Four frictionally held gauge pins in the base can be pushed down and referenced against the edge of a surface plate or T-slot for linear work. The satin chrome finish resists rust and is glare-free. Surface gauges, sometimes referred to as gages, are a tool for machinists and toolmakers to mark lines on a workpiece, transfer measurements from one workpiece to another, and for probing surfaces in inspection work. The scriber is held by a snug that travels on a vertical column (also called the spindle), and may be locked into position by a screw clamp. Surface gauges are typically used in manufacturing, machining, and mechanical engineering. The L.S. Starrett Company manufactures precision measuring tools, metrology and testing equipment, and saw blade products. The company was founded in 1880 and is headquartered in Athol, MA.

• High Precision Tool - The Starrett 257A surface gage features a 9" spindle for accurate scribing, measurement transfers, and surface inspection, catering to professionals and hobbyists alike.
• Durable Construction - With a stable, hardened steel base, this surface gage ensures stability and durability for prolonged use in various industrial and workshop environments.
• Versatile Application - Equipped with four frictionally held gage pins, the 257A offers added versatility for referencing and marking, suitable for metalworking, woodworking, and more.
• Wide Range of Applications - Ideal for use in a variety of industries and applications, providing versatility in professional and hobbyist projects alike.
• The Standard for Excellence - Proudly made in the USA, Starrett combines over 140 years of American heritage and innovation with globally sourced materials to deliver exceptional quality tools and products.