Trimble GEDO Mechanical Cant & Gauge Measurement Device, 1435 mm Measure both track gauge and cant (superelevation) with this mechanical Trimble GEDO measurement device for standard 1435 mm railway track . The device combines gauge and cant measurement in a single unit and features a separable design for easier transport between jobsites. Key Features Measures both track gauge and cant on standard 1435 mm gauge railway track. Gauge measurement range: -20 mm to +40 mm relative to nominal gauge. Cant measurement range: -200 mm to +200 mm for measuring track superelevation. Separable/partable design for easier transport, with transport bag included.