Portable Rolling Track Gauge is mainly used for railway track gauge and super-elevation(cant), check rail gauge and back to back distance measurement.Ican be used for track inspection and fine adjustment of rail gauge.This product has the advantages of fast measuring speed, stable pushing rod, easy to carry,and night-time and tunnel work,legible even in direct sunlight are supported.It is an ideal measuring tool for track fine-tuning, track construction,inspection and track laying. FEATURE 1. Measure the track gauge, cant without bend over your back. 2. Light weight : around 6.5kg , one person operation. 3. Bluetooth connection, data uploading and analysis system. 4. High working efficiency. Save your man power. ( 1 man with 1 rolling gauge = 4 man with 4 normal digital track gauge) SPECIFICATION Model (1435mm) GJC-JJG0 Track gauge 1410-1470mm Superelevation measuring range -185~+185mm Display mode OLED display and hand-held terminal display Supply Voltage DC3.4Vï½?5.2V (rechargeable battery) Superelevation division value 0.05mm Working temperature -30 +55 Insulation performance 1M Track gauge division value 0.01mm Superelevation division value 0.05mm Track gauge max indication error â?¤�±0.25mm Superelevation max indication error â?¤�±0.3mm Length 1700mm Net Weight Net Weight