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2. Manhole cover - Wikipedia

   en.wikipedia.org/wiki/Manhole_cover

   The theft of manhole covers often increases when scrap metal prices are high. [18] [19] Manhole cover theft can be a serious problem in China, where missing manhole covers caused at least eight deaths in 2004. [20] According to China's Xinhua News Agency, about "240,000 manhole and street-drain covers were stolen in Beijing in 2004." [21]

3. Sanitary sewer - Wikipedia

   en.wikipedia.org/wiki/Sanitary_sewer

   A manhole cover for a sanitary sewer access point. View looking down into an open manhole showing two converging sanitary sewer lines. The larger line enters from the right and changes direction within the manhole to exit from the top of the photo. A smaller line enters from the bottom of the photo under the access steps.

4. Help:Convert units - Wikipedia

   en.wikipedia.org/wiki/Help:Convert_units

   A hand is a unit of length used to measure the height of horses. One hand is four inches, ... 9.2|hand}} → 9.2 hands (38 inches; 97 cm ... Conversion of the Mach ...

5. Sanitary manhole - Wikipedia

   en.wikipedia.org/wiki/Sanitary_manhole

   A sanitary manhole under construction. A sanitary manhole (sewer manhole, [1] sanitary sewer manhole [2] or sewer maintenance hole [3]) is a manhole that is used as an access point for maintenance and inspection of an underground sanitary sewer system. Sanitary manholes are sometimes used as vents to prevent the buildup of pressurized sewage ...

6. Template:Convert/list of units - Wikipedia

   en.wikipedia.org/wiki/Template:Convert/list_of_units

   ftin (feet and inches) ft m (foot m) inch: in in Use of ′ and ″ symbols violates MOSNUM so is not provided. 1.0 in (25 mm) in cm; in mm; Other: nautical mile: nmi nmi the international standard nautical mile For other nautical miles see the full list. 1.0 nmi (1.9 km; 1.2 mi) parsec: pc pc 1.0 pc (3.3 ly) light-year: ly ly 1.0 ly (63,000 AU ...

7. Orders of magnitude (length) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(length)

   The centimetre (SI symbol: cm) is a unit of length in the metric system equal to 10 −2 metres (⁠ 1 / 100 ⁠ m = 0.01 m). To help compare different orders of magnitude, this section lists lengths between 10 −2 m and 10 −1 m (1 cm and 1 dm). 1 cm – 10 millimeters; 1 cm – 0.39 inches; 1 cm – edge of a square of area 1 cm 2

8. Manhole - Wikipedia

   en.wikipedia.org/wiki/Manhole

   Manhole covers in Helsinki, Finland. Manhole closings are protected by a grating or manhole cover, a flat plug designed to prevent accidental or unauthorized access to the manhole. These covers are traditionally made of metal, [2] but may be constructed from precast concrete, glass reinforced plastic or other composite materials (especially ...

9. Miner's inch - Wikipedia

   en.wikipedia.org/wiki/Miner's_inch

   The miner's inch is a method of measuring the amount of flow a particular water supply system (such as a flume or sluice) is capable of supplying. The miner ’s inch measures the amount of water that would flow through a slot of a given area at a given pressure (for example, at a head of 6 inches of water , or 1.5 kPa .)