Railway Track Square Railway square ruler is a special measuring tool used to check the right Angle dislocation of railway track. Features 1. High accuracy:The structure is uniform, the linear expansion coefficient is minimal, the internal stress completely disappears, the ruler body is stable and does not deform. It can keep the perpendicularity between the ruler body and the rail surface â?¤0.05mm 2. Long service life: It is made of aluminum alloy, resistant to acid and alkali corrosion, not easy to rust, not easy to stick to dust, no need to grease, easy and simple maintenance 3. Stable insulation performance: one end is the insulated electric board and the other end is the plastic insulation sleeve. It can ensure the operating safely. 4.Customizable 5.The Measuring head is made of bearing steel: High hardness, not easy to rust and deformation 6.Multifunctions 1ï¼?Measure the switch angle steel whether is square when installed 2ï¼?Measure the internal lock switch parts whether is square when installed 3ï¼?Measure the switch rail whether creeping 4ï¼? Measure the sleeper whether square when installed. PRODUCT SPECIFICATIONS Model LJFG-I Type Railway Track Square Material Aluminum alloy Size 1760mm