Starrett Machinists' Level with Ground and Graduated Main Vial - Ideal for Machine Shop and Tool Room Use - 4" Length, Without Case and Cross Test Vial - 98-4

Starrett Machinists' Level with Ground and Graduated Main Vial - Ideal for Machine Shop and Tool Room Use - 4" Length, Without Case and Cross Test Vial - 98-4

• Adjustable - The vials are adjustable to a positive setting. It can be adjusted by turning the knurled knob on the side of the level, making it easy for quick leveling tasks.
• Durable Fine Finish - The base is made from cast iron and is precision-machined on the reference surface to increase durability. The vial is housed in a satin finished brass tube with a friction-fit closing cover to prevent breakage.
• Ergonomic - The base of the levels features an involute groove between the bearing flats for accurate seating on round work. This groove has a special involute design, permitting better centering and greater capacity to handle larger rounds.
• The Exceptional Tool - Machinist levels provide greater accuracy than other construction levels. These levels should be used when the variability of the reference plane is within the range of the level's sensitivity.
• 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.

<div class="aplus"><p>The Starrett 98-4 precision machinists’ level is a 4" long spirit level with a single vial that has a sensitivity of 4 to 4.5 minutes for determining horizontal plane and is adjustable to a positive setting for accurate results. The vial is made of ground glass to resist scratching and provide clear readings, and is housed in a brass tube with a friction-fit closing to resist breakage. A V-shaped groove along the base provides reliable seating when leveling round items such as pipe, conduit, and shafts. The level has a cast iron base for durability. Levels are used in the building trades, engineering, surveying, and metalworking, among other applications.</p><p> Levels are instruments that are used to determine the true horizontal or vertical plane of a surface. The most common type of level is the spirit level, or bubble level. Spirit levels have a liquid-filled, bowed tube (also called a vial) with a bubble that moves when slight adjustments are made to the level. When the bubble settles between marked points on the vial, it indicates that a surface is horizontally or vertically straight. Levels can have one or more vials to determine the horizontal plane, the vertical plane, or various points between, such as a 45-degree angle, simultaneously. Some levels include a laser line indicator that projects a horizontal or vertical beam on a surface. Bullseye levels, or surface levels, are circular, flat-bottomed spirit levels that determine whether a surface plane is level. Machinists’ levels are made of metal and have surfaces designed specifically for rugged use in a machine shop or tool room. Levels can range from highly-complex and accurate machines, such as those used in the surveying and construction industry, to precision instruments used in carpentry and other building trades, to simple, pocket-sized devices for do-it-yourself projects.</p><p> The L.S. Starrett Company manufactures precision measuring tools, metrology and testing equipment, and saw blade products. The company, founded in 1880, is headquartered in Athol, MA. </p></div>