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  2. Roman siege engines - Wikipedia

    en.wikipedia.org/wiki/Roman_siege_engines

    The device was a plank, 4 ft wide and 36 ft long, affixed to the Roman vessel around a pole. This construction allowed the bridge to be swung port to starboard and therefore used on either side of the ship. A pulley at the top of the pole allowed the planks to be raised and lowered on command. At the end of the bridge there was a heavy metal ...

  3. Surveyor's wheel - Wikipedia

    en.wikipedia.org/wiki/Surveyor's_wheel

    The measuring devices would be made by makers of scientific instruments and the device and handles would be attached to the wheel by them. The device to read the distance travelled would be mounted either near the hub of the wheel or at the top of the handle. In some cases, double-wheel hodometers were constructed. Francis Ronalds extended the ...

  4. Litter (vehicle) - Wikipedia

    en.wikipedia.org/wiki/Litter_(vehicle)

    A simple litter consists of a sling attached along its length to poles or stretched inside a frame. The poles or frame are carried by porters in front and behind. Such simple litters are common on battlefields and emergency situations, where terrain prohibits wheeled vehicles from carrying away the dead and wounded.

  5. Glossary of nautical terms (M–Z) - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_nautical_terms...

    Also ship's magazine. The ammunition storage area aboard a warship. magnetic bearing An absolute bearing using magnetic north. magnetic north The direction towards the North Magnetic Pole. Varies slowly over time. maiden voyage The first voyage of a ship in its intended role, i.e. excluding trial trips. Maierform bow A V-shaped bow introduced in the late 1920s which allowed a ship to maintain ...

  6. Camera dolly - Wikipedia

    en.wikipedia.org/wiki/Camera_dolly

    A camera dolly is a wheeled cart or similar device used in filmmaking and television production to create smooth horizontal camera movements. The camera is mounted to the dolly and the camera operator and focus puller or camera assistant usually ride on the dolly to push the dolly back and forth.

  7. Wind-powered vehicle - Wikipedia

    en.wikipedia.org/wiki/Wind-powered_vehicle

    The rules are that the vehicles ride on wheels, with one driver, propelled by a rotor, coupled to the wheels. Temporary storage of energy is allowed, if empty at the beginning of the race. Charging the storage device is counted as race time. Racing takes place towards the wind.

  8. List of bicycle parts - Wikipedia

    en.wikipedia.org/wiki/List_of_bicycle_parts

    Skirt guard or coatguard: a device fitted over the rear wheel of a bicycle to prevent a long skirt, coat or other trailing clothes or luggage from catching in the wheel, or in the gap between the rim and the brakes; Spindle: an axle around which a pedal rotates; threaded at one end to screw into crank arms; Spoke: connects wheel rim to hub ...

  9. Hansom cab - Wikipedia

    en.wikipedia.org/wiki/Hansom_cab

    Hansom cab and driver in the 2004 movie Sherlock Holmes and the Case of the Silk Stocking, set in 1903 London Hansom cab, London, 1904 London Cabmen, 1877. The hansom cab is a kind of horse-drawn carriage designed and patented in 1834 by Joseph Hansom, an architect from York.