Matt,

As you can imagine, there isn't a huge demand for 14mm track gauges and wheel back-to-backs. One of the main roller gauge suppliers is currently offline but hopes to be back up and running at some stage: that's kbscale.com who normally?sell a variety of 14mm products. However, if you read John Clutterbuck's track-making?articles from Narrow Gauge & Industrial Railway Modelling Review (see the group wiki for a link) you will see how John makes his own from brass: some folded, and some cut and filed from heavier gauge material.

A number of suppliers exist for 7mm scale rulers, for example Expo Tools (https://www.expotools.com/acatalog/N-Gauge-Scale-Rule-74102.html).

Hope this helps,

David Hughes

Wiltshire, UK