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2. Sheet metal - Wikipedia

   en.wikipedia.org/wiki/Sheet_metal

   In the U.S., the thickness of sheet metal is commonly specified by a traditional, non-linear measure known as its gauge. The larger the gauge number, the thinner the metal. Commonly used steel sheet metal ranges from 30 gauge to about 7 gauge. Gauge differs between ferrous metals and nonferrous metals such as aluminum or copper. Copper ...

3. Corrugated galvanised iron - Wikipedia

   en.wikipedia.org/wiki/Corrugated_galvanised_iron

   Corrugated galvanised iron (CGI) or steel, colloquially corrugated iron (near universal), wriggly tin (taken from UK military slang), pailing (in Caribbean English), corrugated sheet metal (in North America), zinc (in Cyprus and Nigeria) or custom orb / corro sheet (Australia), is a building material composed of sheets of hot-dip galvanised ...

4. List of track gauges - Wikipedia

   en.wikipedia.org/wiki/List_of_track_gauges

   Railway built by minimum gauge pioneer Sir Arthur Heywood, later abandoned in favor of 15 in (381 mm) gauge. 240 mm 9 + 7 ⁄ 16 in: See 9 + 7 ⁄ 16 in (240 mm) gauge ridable miniature railways: 241 mm 9 + 1 ⁄ 2 in: See 9 + 1 ⁄ 2 in (241 mm) gauge ridable miniature railways: 260 mm 10 + 1 ⁄ 4 in: See 10 + 1 ⁄ 4 in (260 mm) gauge ...

5. Cold-formed steel - Wikipedia

   en.wikipedia.org/wiki/Cold-formed_steel

   When thickness less than or equal to 3/16" (4.76mm): The various possible welds in cold formed steel sections, where the thickness of the thinnest element in the connection is 3/16" or less are as follows Groove Welds in Butt joints; Arc Spot Welds; Arc Seam Welds; Fillet Welds; Flare Groove Welds; 2.When thickness greater than or equal to 3/16 ...

6. Narrow-gauge railway - Wikipedia

   en.wikipedia.org/wiki/Narrow-gauge_railway

   A 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 railways are between 600 mm ( 1 ft 11 + 5 ⁄ 8 in ) and 1,067 mm ( 3 ft 6 in ).

7. Birmingham gauge - Wikipedia

   en.wikipedia.org/wiki/Birmingham_gauge

   The Birmingham gauge is also known as the Stubs Iron Wire Gauge or Birmingham Wire Gauge and is distinct from the Stubs Steel Wire Gauge and the British Standard Wire Gauge. It is commonly referred to simply as gauge (abbreviated as G ), [ 3 ] but this should not be confused with the French gauge , a separate system used for measuring the outer ...