Precision Machinist Square 4 Inch Engineer Square 90 Degree Right Angle Ruler Ground Hardened Steel with Seat 4 x 2.8 Inch

The heavy square base ensures stability and precision, you will love the weight, balance and design of this engineer square. The blade is permanently fixed to the beam which ensure complete rigidity. Blade edges and beam faces are precisely ground and polished for straight and smooth, have an inside notch for accuracy. This machinist square accuracy reaches DIN 875 Grade 1, it is THE square that you proof everything else to. Specification: Material: Carbon Steel(45 Steel) Precision: DIN 875 Grade 1 Size:100x70mm(4x2.8 inch) Thickness: 5mm(0.2inch) Use For: Suitable for use in laboratory,woodworking, precision layout work and machine set-up Package Included: 1 x Precision Machinist Square NOTE: 1. The square wrapped in clear plastic with oil on it for protection, it's very easy to wipe off with a towel before use.

• Precision: DIN 875 Grade 1, designed for precision layout, machine set-up and laboratory use
• Squares are true right angles both inside and outside
• These squares are made of hardened, tempered and polished steel, beams and blades are ground and polished for parallelism
• Have an inside notch for accuracy
• 4 inch blade and 2.8 inch beam, length of blade is measured from top of beam to end of blade