At left is a plan of the Mount Barker Model Railway Club's HO scale layout.  Track is 2-rail Peco code 100 employing Insulfrog switches and crossings.  As such, they accomodate a wide range of HO scale rolling stock, regardless of age or prototype.

Originally built to run on 12 volt Direct Current (DC) control, sectioned into four (4) switchable sections, the layout was later updated to Digital Command Control (DCC) using NCE components, and currently remains so.

The line is modelled to loosely reflect the Southern Mainline of the former South Australian Railways, in that it runs from Adelaide up to Mount Barker. Intervening station names are intended to reflect industries in their area, thus are in no way geographically accurate.

The layout's ruling grade is not recorded, but grades are reasonably realistic, requiring double-heading or bank engines only for very long trains.  Minimum radius is approximately 24 inches, and can handle long locomotives (e.g., Austrains NR class diesels and Eureka Models - NSWGR AD60 Beyer-Garratt) as well as long wagons such as Auscision VFX/ABFX Louvered Vans and GOX/AOOX gondolas.

Scenery and buildings reflect South Australian prototype.  The buildings were chiefly constructed by former club member, the late Ron Carter, with scenery modelled  by current and former members. 

Access to the layout is per "duck-under" between Graham's Corner and Mount Barker (see right-quadrant of the layout plan).