How to choose the railway wheel gauge

• Diameter measuring range: Compact 300–950 mm, Standard 320–1000 mm, Extended 910–1400 mm – choose according to the diameters of the wheels to be checked.
• Data transmission: the -BT version adds Bluetooth and the Android/iOS app for recording measurements and ensuring their traceability.
• Common method: three-point contact, digital indicator, magnetic attachment and IP42 protection on all models.
• Calibration: calibrators with nominal diameters from 860 to 940 mm, complete with measurement certificate.

Model comparison

Model	Measuring range	Resolution	Attachment	Bluetooth	Part numbers (base / -BT)
Compact	300–950 mm	0.1 mm (down to 0.01)	magnets	optional	10-15-22 / 10-15-23
Standard	320–1000 mm	0.1 mm (down to 0.01)	magnets	optional	10-15-20 / 10-15-21
Extended	910–1400 mm	0.1 mm (down to 0.01)	magnets	optional	10-15-24 / 10-15-25

The DIACHECK-CTFR models

Gauges for measuring the diameter of railway wheels

The Compact, Standard and Extended models cover the entire range of railway wheel diameters, from the maintenance of carriages and wagons through to large-diameter wheels. Measuring directly on the vehicle, with no dismantling, shortens inspection times and supports preventive maintenance programs.

All the models use a three-point contact method with a digital indicator and magnetic attachment, ensuring repeatable readings that meet the dimensional tolerances required by railway safety standards. The Bluetooth version allows traceability and integration into digital workflows.