We are dealers for the Bachrus Rolling Road System and the Wheeldoctor.
The rolling road system consists of saddles (pairs of rollers for driving wheels) and stirrups for non driving wheels. You buy as many saddles as you need. A 4-6-0 needs 3 saddles. A 2-10-0 needs 5 saddles. A Co-Co diesel driven on all axles needs 6 saddles. The stirrups come in one set which will meet all your requirements.
There are three sizes:
Series 40, for gauges from 6.5mm - 15mm. Suitable for N & 2mm scales.
Series 50, for gauges from 10mm - 23mm. Suitable for TT, H0, 00, EM P4 and S scales.
Series 60, for gauges from 19mm - 45mm. Suitable for Gauge 0 SM32 and Gauge 1.
These are fully adjustable to any gauge within their range.
There is a speedometer add on for the series 40 and 50.