Starrett Machinists' Level, Ground and Graduated Main Vial, 4" Length | for Machine Shop and Tool Room Use, 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.