Machinist Square Ruler, Measuring Tool High Accuracy Angle Ruler Carbon Steel 90 Degrees Compatible with Precise Layout Measurement Work

• There are 7 types, 80x50mm/ 100x63mm/125x80mm/200x125mm/ 200x160mm/250x160mm/300x200mm, selecting according to your needs.
• It is a professional tool for assembly and platform work in industrial quality.
• Made of hardened carbon steel, heat treated, high hardness.
• Designed for precise layout and measurement work and for detection of angles and part markings.
• The flat angle of the base is 90 degrees inside and outside. It is used to measure the right angle. It can measure the vertical deviation of the inner and outer corners of the workpiece.