Precision Machinist Square for Engineers: 4 x 2.5 Inch Hardened Steel Angel Ruler

About this item

• 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;The blade is permanently fixed to the beam by means of tapered self locking rivets which ensure complete rigidity.
• 4 inch blade and 2.5 inch beam,length of blade is measured from corner edge of beam to end of blade.
• The small plastic case it comes with makes sure that it will always remain THE standard of square for you from now on.