1 Gauge

1 Gauge

Gauge 1 (also referred to as Gauge One) is a model railroading and toy train standard, popular in the early 20th century, particularly with European manufacturers. Its track measures 1.75 in (44.45 mm), making it larger than 0 gauge but slightly smaller than wide gauge, which came to be the dominant U.S. standard during the 1920s.

No 1 gauge was standardised, according to Model Railways and Locomotive magazine of August 1909 at 1.75 in (44.45 mm). The distance between the wheel tyres at 1+17⁄₃₂ in (38.894 mm) and between the centre of the track 48 mm (no inch equivalent suggesting it was metric users requirement only). The wheel width was set at 19⁄₆₄ in (7.541 mm).

Definitions using gauge, rather than scale, was used more common in the early days with the four gauges for which standards were adopted being No. 0 (commonly called O gauge nowadays), No. 1, No. 2 and No. 3.