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  2. This Is the Right Way to Measure Windows for Curtains ... - AOL

    www.aol.com/lifestyle/way-measure-windows...

    The right length for curtains depends on the room and window. Pros explain how to measure windows for curtains, including drapery panels and cafe curtains.

  3. Rack unit - Wikipedia

    en.wikipedia.org/wiki/Rack_unit

    Rack with sample component sizes including an A/V half-rack unit. A rack unit (abbreviated U or RU) is a unit of measure defined as 1 + 3 ⁄ 4 inches (44.45 mm). [1] [2] It is most frequently used as a measurement of the overall height of 19-inch and 23-inch rack frames, as well as the height of equipment that mounts in these frames, whereby the height of the frame or equipment is expressed ...

  4. Brannock Device - Wikipedia

    en.wikipedia.org/wiki/Brannock_Device

    The modern Brannock device takes three measurements of each foot: Foot length the length from heel to the tip of the longest toe (in increments of barleycorns) Arch length the length from heel to the inside of the ball of the foot, or medial metatarsophalangeal joint Width the width of the foot perpendicular to the length

  5. List of unusual units of measurement - Wikipedia

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

    An Olympic-size swimming pool holds over 2 acre-feet of water For larger volumes of liquid, one measure commonly used in the media in many countries is the Olympic-size swimming pool. [47] A 50 m × 25 m (164 ft × 82 ft) Olympic swimming pool, built to the FR3 minimum depth of 2 metres (6.6 ft) would hold 2,500 m 3 (660,000 US gal).

  6. Engineering tolerance - Wikipedia

    en.wikipedia.org/wiki/Engineering_tolerance

    In civil engineering, clearance refers to the difference between the loading gauge and the structure gauge in the case of railroad cars or trams, or the difference between the size of any vehicle and the width/height of doors, the width/height of an overpass or the diameter of a tunnel as well as the air draft under a bridge, the width of a ...

  7. Unit of length - Wikipedia

    en.wikipedia.org/wiki/Unit_of_length

    The basic unit of length in the imperial and U.S. customary systems is the yard, defined as exactly 0.9144 m by international treaty in 1959. [2] [10] Common imperial units and U.S. customary units of length include: [11] thou or mil (1 ⁄ 1000 of an inch) inch (25.4 mm) foot (12 inches, 0.3048 m) yard (3 feet, 0.9144 m)

  8. Visual angle - Wikipedia

    en.wikipedia.org/wiki/Visual_angle

    The other "size" experience is the object's perceived linear size ′ (or apparent linear size) which is the subjective correlate of , the object's physical width or height or diameter. Widespread use of the ambiguous terms "apparent size" and "perceived size" without specifying the units of measure has caused confusion.

  9. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!