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  2. Gauge (firearms) - Wikipedia

    en.wikipedia.org/wiki/Gauge_(firearms)

    The 20-gauge shotgun is the next most popular size [citation needed], and is popular for upland game hunting. The next most popular sizes are the .410 bore and the 28 gauge. The least popular sizes are the 10 gauge and the 16 gauge; while far less common than the other four gauges, they are still commercially available. [citation needed] [9]

  3. Inch of water - Wikipedia

    en.wikipedia.org/wiki/Inch_of_water

    Inches of water is a non-SI unit for pressure. It is also given as inches of water gauge (iwg or in.w.g.), inches ... 6 and 7 inches WC or about 0.25 ...

  4. French catheter scale - Wikipedia

    en.wikipedia.org/wiki/French_catheter_scale

    The French scale, also known as the French gauge or Charrière system, is a widely used measurement system for the size of catheters. It is commonly abbreviated as Fr but may also be abbreviated as Fg , FR or F , and less frequently as CH or Ch (referencing its inventor, Charrière ).

  5. List of gauge conversions - Wikipedia

    en.wikipedia.org/wiki/List_of_gauge_conversions

    This dual gauge replaces the narrow gauge that was chosen to enable cheap 100m radius curves and 2% gradients. 900 mm (2 ft 11 + 7 ⁄ 16 in) 1,000 mm (3 ft 3 + 3 ⁄ 8 in) 2008–2009 Austria: Pöstlingbergbahn: 1,435 mm (4 ft 8 + 1 ⁄ 2 in) 760 mm (2 ft 5 + 15 ⁄ 16 in) 1961 Austria Tschagguns–Partenen railway: 1,435 mm (4 ft 8 + 1 ⁄ 2 in)

  6. List of track gauges - Wikipedia

    en.wikipedia.org/wiki/List_of_track_gauges

    Brighton and Rottingdean Seashore Electric Railway (a vehicle that ran on two parallel 2 ft 8 + 1 ⁄ 2 in (825 mm) gauge tracks, billed as 18 ft (5.5 m) gauge), Furzebrook Railway and Volk's Electric Railway: 838 mm 2 ft 9 in: Japan Nankai Railway (former gauge, converted to 1,067 mm (3 ft 6 in gauge) England

  7. Drill bit sizes - Wikipedia

    en.wikipedia.org/wiki/Drill_bit_sizes

    In the U.S., fractional inch and gauge drill bit sizes are in common use. In nearly all other countries, metric drill bit sizes are most common, and all others are anachronisms or are reserved for dealing with designs from the US. The British Standards on replacing gauge size drill bits with metric sizes in the UK was first published in 1959.

  8. Birmingham gauge - Wikipedia

    en.wikipedia.org/wiki/Birmingham_gauge

    The Birmingham gauge ranges from 5/0 or 00000, the lowest gauge number corresponding to the largest size of 0.500 inches (12.7 mm), to 36, the highest gauge number corresponding to the smallest size of 0.004 inches (0.10 mm). The increments between gauge sizes are not linear and vary. [2]

  9. List of rail transport modelling scale standards - Wikipedia

    en.wikipedia.org/wiki/List_of_rail_transport...

    In terms of model railway operation, gauge 3 is the largest (standard gauge) scenic railway modelling scale, using a scale of 13.5 mm to the foot. The Gauge '3' Society represents this aspect of 2 + 1 ⁄ 2-inch gauge railway modelling with both electric and live steam operation. Gauge '3' corresponds to NEM II scale, also known as "Spur II" in ...