A railway gauge ruler is a specialized measuring instrument used to measure the gauge and level between two rails of a railway line. It is an essential tool for railway construction and maintenance, enabling effective data measurement of track spacing, levelness, and other track line indicators. Widely applied in main railway lines, local railways, subways, urban rail transit, mines, steel plants, and other track maintenance and upkeep.

Scope of application:

1. Standard gauge railways with operating speeds ≤160 km/h;

2. 1435 standard gauge measurement range: (1410～1470) mm;

3. 1391 parameter measurement range: (1381～1401) mm;

4. 1348 parameter measurement range: (1338～1358) mm;

5. Superelevation (level) measurement range: (-150～+150) mm;

Superelevation graduation value: 1.0 mm;

Gauge graduation value: 1.0 mm;

Maximum level zero error: ±0.65 mm