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该直角尺检具是由刀刃形长边,通过固紧螺丝2、及连接杆3、螺丝4与短边5紧固连接而成。其直角角度是由基准直角尺进行校正,基准直角尺的误差在该检具上要于以修正,以提高检具精度。在刀刃形长边上装有两块针状测头千分表(针状测头与刀刃相交并超出刀刃大约0.5毫米后将千分表指针对上零位。千分表对零是由一量块压在刀刃上来实现的),即构成该直角尺检具。工作原理与使用方法将被检直角尺接触该检具。假如被检直角尺90°无误差,在被检直角尺长边和检具刀刃形长边全部接触后,就将两个千分表的测头推到与刀刃成一条直线上,两个千分表指针全部指向到零位上。假如被检直角尺90°有误差,出现一端和检具接触,
The square ruler is formed by the long edge of the knife edge, the fastening screw 2 and the connecting rod 3, and the screw 4 is tightly connected with the short edge 5. The right-angle angle is corrected by the reference square, the error of the reference square at the fixture to be amended to improve the fixture accuracy. On the long side of the blade, two needle probes are mounted on the long edge (the needle probe intersects the cutting edge and moves the dial gauge to the zero position after about 0.5 mm of the cutting edge. Block pressed on the blade to achieve), that constitutes the square ruler. Working principle and method of use will be seized rectangular square touch the gage. If the seizure of 90 degrees square ruler error, the seizure of the long edge and the seizure of the long side of the knife edge after all touch, it will push the two dial gauge probe into line with the blade, two thousand Points table pointer all points to zero. If the seizure of 90 degrees square ruler error occurs, and one end of the gage contact,