Starrett Starrett Improved Trammel Head with Stable Cast Iron Protractor Head and Hardened Steel Divider Points - 3" Point Size - Includes: 2 Heads, 2 Points, and a Pencil Socket - 50B

The head is die cast with black wrinkle finish and have hardened, forged steel divider points. The points screw into the heads, and the pencil socket accompanying each set of trammel heads can be used in place of either point. A beam is not furnished with these trammels. The heads will accommodate a beam up to 3/8" thick and 3/4" wide. About this item Increased Precision - The 50B trammel head is designed to have an adjustable point for extra accuracy. It is made with cast-iron bodies and designed with spirit level indicators. The blades are also accurate, machine-divided graduations. Reversible Lock Bolt - This feature allows the choice of which graduated side of the blade faces the operator. It will be easier to scribe circles and arcs that are too large to be drawn by using a common divider and compass in the market. Spirit Level Indicator - This feature indicates when the base reference surface is level. This feature is not usually available on comparable protractors in the market. The points also have a 3"/75mm point size. Made To Last - This tool is made with durable materials. The protractor heads are made of cast iron and finished with a black wrinkle finish or smooth black finish. The blades are tempered steel with accurate, machine-divided graduations. 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. See more product details