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2. Mulready stationery - Wikipedia

   en.wikipedia.org/wiki/Mulready_stationery

   The 2 pence Mulready stationery issued in 1840. Rowland Hill expected the Mulready stationery to be more popular than the postage stamps but the postage stamp prevailed. The design was so elaborate and misunderstood that it generated widespread ridicule and lampooning, and in addition was perceived in some areas as a covert government attempt to control the supply of envelopes, and hence ...

3. Trapezoidal thread form - Wikipedia

   en.wikipedia.org/wiki/Trapezoidal_thread_form

   The original trapezoidal thread form, and still probably the one most commonly encountered worldwide, with a 29° thread angle, is the Acme thread form (/ ˈ æ k m iː / AK-mee). The Acme thread was developed in 1894 as a profile well suited to power screws that has various advantages over the square thread , [ note 1 ] which had been the form ...

4. File:Acme thread.svg - Wikipedia

   en.wikipedia.org/wiki/File:Acme_thread.svg

   This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.: You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work

5. Thread angle - Wikipedia

   en.wikipedia.org/wiki/Thread_angle

   Acme thread [6] 29° ASME/ANSI B1.5-1988 [7] Metric trapezoidal threads [1] Tr 30° DIN 103 Buttress threads [6] S 45° DIN 2781 German buttress threads [6] S 30° DIN 513 Square threads [1] Sq 0° (parallel) ? Panzergewinde, "steel conduit thread" Pg 80° DIN 40430 British Association (BA) thread: BA 47° 30' = 47.5° BS 93:2008 Löwenherz ...

6. Template:Address restricted/doc - Wikipedia

   en.wikipedia.org/wiki/Template:Address...

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7. Envelope - Wikipedia

   en.wikipedia.org/wiki/Envelope

   No more than 6 + 1 ⁄ 8 inches high × 11 + 1 ⁄ 2 inches long × 1 ⁄ 4 inch thick. [ 8 ] Letters that have a length-to-height aspect ratio of less than 1.3 or more than 2.5 are classified as "non-machinable" by the USPS and may cost more to mail.

8. File:Acme thread.jpg - Wikipedia

   en.wikipedia.org/wiki/File:Acme_thread.jpg

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9. Buttress thread - Wikipedia

   en.wikipedia.org/wiki/Buttress_thread

   In oil field tubing, buttress thread is a pipe thread form designed to provide a tight hydraulic seal. The thread form is similar to that of Acme thread [10] but there are two distinct threaded portions of differing diameters and profiles, the larger having a wedging profile, with a tapered sealing portion in between the larger and smaller diameters.