1 gauge, gauge 1 or gauge one is a model railway and toy train standard that was popular in the early 20th century, particularly with European manufacturers...

In physics, a gauge theory is a type of field theory in which the Lagrangian, and hence the dynamics of the system itself, do not change under local transformations...

In the physics of gauge theories, gauge fixing (also called choosing a gauge) denotes a mathematical procedure for coping with redundant degrees of freedom...

O scale (or O gauge) is a scale commonly used for toy trains and rail transport modelling. Introduced by German toy manufacturer Märklin around 1900,...

12-gauge bore. Therefore with a 12-gauge, it would take 12 balls of lead of the same size as the 12 gauge shotgun's inner bore diameter to weigh 1 pound...

narrow-gauge railway (narrow-gauge railroad in the US) is a railway with a track gauge narrower than 1,435 mm (4 ft 8+1⁄2 in) standard gauge. Most narrow-gauge...

G scale or G gauge, also called large scale (45 mm or 1+3⁄4 inches), is a track gauge for model railways which is often used for outdoor garden railways...

scale ranges from 1:148 to 1:160. Effectively the scale is 1:159, 9 mm to 1,435 mm (4 ft 8+1⁄2 in), which is the width of standard gauge railway. However...

for modelling 1,435 mm (4 ft 8+1⁄2 in) standard gauge tracks and trains in HO. The name HO comes from 1:87 scale being half that of O scale, which was...

wheelsets that are compatible with the track gauge. Since many different track gauges exist worldwide, gauge differences often present a barrier to wider...

(1.772 in) (the same as 1 gauge). This G gauge at 1:22.5 scale represents 1,000 mm (3 ft 3+3⁄8 in) metre gauge narrow-gauge railways. This scale-gauge...

mechanically are called pressure gauges, vacuum gauges or compound gauges (vacuum & pressure). The widely used Bourdon gauge is a mechanical device, which...

international gauge, UIC gauge, uniform gauge, normal gauge in Europe, and SGR in East Africa. It is the most widely used track gauge around the world...

Metre-gauge railways (US: meter-gauge railways) are narrow-gauge railways with track gauge of 1,000 mm (3 ft 3+3⁄8 in) or 1 metre. Metre gauge is used...

Gauge is an American pornographic actor and feature dancer. After having appeared in about 140 movies, Gauge left the pornographic film industry in 2005...

American Wire Gauge (AWG) is a logarithmic stepped standardized wire gauge system used since 1857, predominantly in North America, for the diameters of...

A 7+1⁄4-inch gauge railway is a miniature railway that uses the gauge of 7+1⁄4 in (184 mm). It is mainly used in clubs, amusement parks and as a backyard...

Gauge or Birmingham Wire Gauge. It is not the same as, though similar to, the Stubs Steel Wire Gauge. Birmingham gauge is often simply termed Gauge,...

quantized gauge theory, gauge bosons are quanta of the gauge fields. Consequently, there are as many gauge bosons as there are generators of the gauge field...

A loading gauge is a diagram or physical structure that defines the maximum height and width dimensions in railway vehicles and their loads. Their purpose...

OO gauge or OO scale (also, 00 gauge and 00 scale) is the most popular standard gauge model railway standard in the United Kingdom, outside of which it...

track gauges by size. A gauge is measured between the inner faces of the rails. For ridable miniature railways and minimum gauge railways, the gauges are...

In railway engineering, "gauge" is the transverse distance between the inner surfaces of the heads of two rails, which for the vast majority of railway...

A feeler gauge is a tool used to measure gap widths. Feeler gauges are mostly used in engineering to measure the clearance between two parts. They consist...

A strain gauge (also spelled strain gage) is a device used to measure strain on an object. Invented by Edward E. Simmons and Arthur C. Ruge in 1938, the...

track gauge of 5 ft (1,524 mm) first appeared in the United Kingdom and the United States. This gauge became commonly known as "Russian gauge", because...

Railways with a track gauge of 3 ft 6 in (1,067 mm) were first constructed as horse-drawn wagonways. The first intercity passenger railway to use 3 ft...

A rain gauge (also known as udometer, pluviometer, ombrometer, and hyetometer) is an instrument used by meteorologists and hydrologists to gather and...

5 ft 6 in (1,680 mm) is a broad track gauge, used in India, Pakistan, western Bangladesh, Sri Lanka, Argentina, Chile, and on BART in the San Francisco...

Gauge blocks (also known as gage blocks, Johansson gauges, slip gauges, or Jo blocks) are a system for producing precision lengths. The individual gauge...