Official Standards Gauges by NASG

NASG (click for web site)

S

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The NASG, itself, sells the officially-recognized Standards Gauge for S-scale standard-gauge track. This gauge can check both the track gauge (including turnouts) and the equipment's wheel gauge. See our era-specific clearance gauges for the complete standards.

NASG (click for web site)

Sn3

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The NASG carries the official NMRA Sn3 Standards Gauge for S-scale 3-foot narrow-gauge track. This gauge can check the track gauge (including turnouts), the equipment's wheel gauge, and the required clearance for items surrounding the track. These three can be combined, because there was only one era during which narrow-gauge was active.

NASG (click for web site)

S

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The clearance gauge is a tool to assist in building S-scale model train layouts, modules, and dioramas. Wherever track passes by a bridge, tunnel, structure, trackside object, or equipment on an adjacent track, the gauge can verify that rolling stock will be able to move unobstructed. It is not intended to be used as a gauge for building track work itself; just for positioning surrounding items alongside track. This Classic Era Clearance Gauge version is intended for use with equipment found in the "classic" era, which spans from 1920 through 1969.

NASG (click for web site)

S

metal

The clearance gauge is a tool to assist in building S-scale model train layouts, modules, and dioramas. Wherever track passes by a bridge, tunnel, structure, trackside object, or equipment on an adjacent track, the gauge can verify that rolling stock will be able to move unobstructed. It is not intended to be used as a gauge for building track work itself; just for positioning surrounding items alongside track. This Modern Era Clearance Gauge version is intended for use with equipment found in the "modern" era, which spans from 1983 to present.