The Starrett Double Square features 4R graduations in 1/8", 1/16", 1/32", and 1/64" increments, delivering fast, precise measurements for detailed layout work.
Starrett squares come in a range of practical styles designed to meet the specific needs of toolmakers, mechanics, carpenters, and DIY enthusiasts alike.
Technical Specifications
The Starrett 13 Series Double Square is a trusted favorite among machinists, toolmakers, patternmakers , and precision craftsmen who demand accuracy and adaptability in their daily work. Its compact design and high-quality construction make it an essential tool for layout, inspection, and setup tasks across a wide range of applications. This square features a 4" satin chrome-finished graduated blade , offering excellent readability and resistance to glare and corrosion. The sliding blade is fully adjustable , allowing for precise positioning and repeatable measurements at various depths and angles, ideal for tight tolerances and custom setups.
The head is precision-ground square on all faces , ensuring reliable 90° accuracy whether you're checking edges, setting up machinery, or marking workpieces. Equipped with 4R graduations —1/8", 1/16", 1/32", and 1/64"—this square provides quick, accurate readings for both coarse and fine measurements. The graduated blade only configuration keeps the tool lightweight and focused on precision, while the satin chrome finish enhances durability and long-term performance in demanding shop environments. Whether you're working in a machine shop, tool room, or on a detailed layout project, the Starrett 13 Series delivers the precision, versatility, and craftsmanship professionals rely on.
