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2. Bolt (cloth) - Wikipedia

   en.wikipedia.org/wiki/Bolt_(cloth)

   a commercial unit of length or area used to measure finished cloth. Generally speaking, one bolt represents a strip of cloth 100 yards (91.44 meters) long, but the width varies according to the fabric. Cotton bolts are traditionally 42 inches (1.067 meters) wide and wool bolts are usually 60 inches (1.524 meters) wide.

3. Cotton duck - Wikipedia

   en.wikipedia.org/wiki/Cotton_duck

   The grade of numbered duck refers to the number of ounces subtracted from 19 for a 36-by-22-inch piece of fabric. For example, a piece of No. 8 numbered duck with dimensions of 36 by 22 inches weighs 11 ounces (310 g) (19 − 8 = 11). [5] Number duck classifications per linear yard, 22 inches wide

4. Curtain wall (architecture) - Wikipedia

   en.wikipedia.org/wiki/Curtain_wall_(architecture)

   In tests, standard curtain wall systems are typically able to withstand up to three inches (76 mm) of relative floor movement without glass breakage or water leakage. Snow load. Snow loads and live loads are not typically an issue in curtain walls, since curtain walls are designed to be vertical or slightly inclined. If the slope of a wall ...

5. 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!

6. Nottingham lace curtain machine - Wikipedia

   en.wikipedia.org/wiki/Nottingham_lace_curtain...

   The Leavers mesh tends to be hexagonal, while the Curtain machine produces a straight mesh. The use of Jacquards for producing patterned lace was well established. At the 1851 Great Exhibition, curtains 5 yards (460 cm) long by 2 yards (180 cm) wide were displayed. Their extensive designs required over 12,000 Jacquard cards.

7. Focal-plane shutter - Wikipedia

   en.wikipedia.org/wiki/Focal-plane_shutter

   Focal-plane shutters may also produce image distortion of very fast-moving objects or when panned rapidly, as described in the Rolling shutter article. A large relative difference between a slow wipe speed and a narrow curtain slit results in distortion because one side of the frame is exposed at a noticeably later instant than the other and the object's interim movement is imaged.