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  2. Baden-Powell's unilens - Wikipedia

    en.wikipedia.org/wiki/Baden-Powell's_Unilens

    The unilens monocular is simply a 2.5 inch (6.4 cm) diameter convex lens with a 6 foot (1.8 m) focal length, ... trekking pole, or umbrella tip.

  3. Military radio antenna kites - Wikipedia

    en.wikipedia.org/wiki/Military_radio_antenna_kites

    The “King” kite was large, 7 feet high and 5 feet wide, made of 15 yards of white Japanese silk on a bamboo frame, and weighed less than 2 pounds. [2] Similar to Silas J. Conyne's kite of 1902, [ 3 ] it had a diamond shape with a squared-off top and bottom, keel, and large opening in the center to give it some of the stability of a box kite.

  4. Moxon antenna - Wikipedia

    en.wikipedia.org/wiki/Moxon_antenna

    Moxon antenna for the 20-meter band.The antenna is the faint rectangle of wires held in tension by the bent X-shaped support frame. Moxon antenna for the 2-meter band. The Moxon antenna or Moxon rectangle is a simple and mechanically rugged two-element parasitic array, single-frequency antenna. [1]

  5. Umbrella - Wikipedia

    en.wikipedia.org/wiki/Umbrella

    Parts of an umbrella [2]. The word parasol is a combination of the Latin parare, and sol, meaning 'sun'. [3] Parapluie (French) similarly consists of para combined with pluie, which means 'rain' (which in turn derives from pluvia, the Latin word for rain); the usage of this word was prevalent in the nineteenth century.

  6. Rod (unit) - Wikipedia

    en.wikipedia.org/wiki/Rod_(unit)

    The rod, perch, or pole (sometimes also lug) is a surveyor's tool [1] and unit of length of various historical definitions. In British imperial and US customary units , it is defined as 16 + 1 ⁄ 2 feet , equal to exactly 1 ⁄ 320 of a mile , or 5 + 1 ⁄ 2 yards (a quarter of a surveyor's chain ), and is exactly 5.0292 meters.

  7. Quarterstaff - Wikipedia

    en.wikipedia.org/wiki/Quarterstaff

    The term is generally accepted to refer to a shaft of hardwood from 6 to 9 feet (1.8 to 2.7 m) long, sometimes with a metal tip, ferrule, or spike at one or both ends. The term "short staff" compares this to the "long staff" based on the pike with a length in excess of 10 to 12 feet (3.0 to 3.7 m). The height of the staff should be around the ...

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