Alex Seal

Broad Gauge

2mm Finescale Standards

These are based on the the 2mm Scale Association "Finescale Standards" and define the track and wheel relationships for models built to a consistent scale of 1:152 (or 2mm:1ft). These are also supported by the Broad Gauge Society.

Track Dimensions
TG Track Gauge (min) 14.04
GW Gauge Widening   0.10
under 36" radius
WF Wing-Rail Flangeway   0.50
CF Check Rail Flangeway (min) 0.56
    (max) 0.58
CG Check Gauge (min) 13.56
BC Between Checks (max) 13.00
RH Recommend Rail Height   Code 40
Wheel Dimensions
WG Wheel Gauge   ?
BB Back-To-Back (min) 13.13
    (max) 13.20
OT Over Tyre Face   15.73
AL Axle Length   16.75
TW Tyre Width (min) 1.22
    (max) 1.30
TR Tread Width   1.00
FW Flange Width / Thickness (max) 0.30
FD Flange Depth   0.51
FR Flange Tyre Radius   0.13
TC Tyre Coning  
  Check Dimension (max) 13.50

2mm Finescale Standards