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  2. Horizontal pitch - Wikipedia

    en.wikipedia.org/wiki/Horizontal_pitch

    Horizontal pitch (HP) is a unit of length defined by the Eurocard printed circuit board standard used to measure the horizontal width of rack mounted electronic equipment, similar to the rack unit (U) used to measure vertical heights of rack mounted equipment. One HP is 0.2 inches (5.08 mm) wide. [ 1 ][ 2 ] A standard 19-inch rack is 95 HP wide ...

  3. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    One HP is 0.2 inches (1/5") or 5.08 millimetres wide. Hammer unit ... equals roughly 8 feet or 2.4 metres. Shorter distances are measured in fractions of a ...

  4. M425 and 426 tractor truck - Wikipedia

    en.wikipedia.org/wiki/M425_and_426_Tractor_Truck

    A set back front axle allowed a wheelbase of only 9 feet 9 inches (2.97 m), allowing a very short turn radius. The M425 and M426 were general service load carriers, designed to haul load over roads, so they didn't need to be 4 x 4. The front axle was an I-beam, the rear was a double reduction full floating type.

  5. HMS Grafton (1679) - Wikipedia

    en.wikipedia.org/wiki/HMS_Grafton_(1679)

    She was launched/completed in 1700. Her dimensions were a gundeck of 150 feet 8.5 inches (45.94 metres) with a keel of 124 feet 5 inches (37.92 metres) for tonnage calculation with a breadth of 40 feet 10 inches (12.45 metres) and a depth of hold of 16 feet 8 inches (5.08 metres).

  6. Gear inches - Wikipedia

    en.wikipedia.org/wiki/Gear_inches

    Gear inches is an imperial measure corresponding to the diameter in inches of the drive wheel of a penny-farthing bicycle with equivalent (direct-drive) gearing. A commonly used metric alternative is known as metres of development or rollout distance, which specifies how many metres a bicycle travels per revolution of the crank.

  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 millimetres. 1 cm – 0.39 inches. 1 cm – edge of a square of area 1 cm 2.

  8. Audio tape specifications - Wikipedia

    en.wikipedia.org/wiki/Audio_tape_specifications

    The first commonly available increase in tape length resulted from a reduction in backing thickness from 1.5 to 1.0 mil (38 to 25 μm) resulting in a total thickness reduction from 42 to 35 μm (1.7 to 1.4 mils), which allowed 3,600 ft (1,100 m), 1,800 ft (550 m), and 900 ft (270 m) tapes to fit on ten-and-a-half-, seven-, and five-inch reels respectively.

  9. List of scale model sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_scale_model_sizes

    Fontanini produces 5 inch nativity scene figures at this scale. 1:14: 0.8571428 in: 21.77 mm Tamiya Tamiya 56301 RC 1:14 King Hauler, RC Tractor Trucks 1:14 Scale. 1:13.71: 22.225 mm Model railway scratchbuilders' scale at 7 ⁄ 8 inches to a foot, commonly used with 45 mm gauge track to represent 2 ft gauge prototypes. 1:13: 59 ⁄ 64 in: 23.44 mm