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2. 2.25-Inch Sub-Caliber Aircraft Rocket - Wikipedia

   en.wikipedia.org/wiki/2.25-Inch_Sub-Caliber...

   Designated 2.25-Inch Sub-Caliber Aircraft Rocket, the resulting rocket was a joint project between the Bureau of Ordnance and the National Defense Research Committee. [2] As its name implied, the rocket was designed as a sub-calibre weapon compared to the FFAR, being only 2.25 inches (57 mm) in diameter, but weighted to be ballistically similar ...

3. List of drill and tap sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

   Example (inch, coarse): For size 7 ⁄ 16 (this is the diameter of the intended screw in fraction form)-14 (this is the number of threads per inch; 14 is considered coarse), 0.437 in × 0.85 = 0.371 in. Therefore, a size 7 ⁄ 16 screw (7 ⁄ 16 ≈ 0.437) with 14 threads per inch (coarse) needs a tap drill with a diameter of about 0.371 inches.

4. Turret punch - Wikipedia

   en.wikipedia.org/wiki/Turret_punch

   A turret punch or turret press is a type of punch press used for metal forming by punching. Punching, and press work in general, is a process well suited to mass production. However the initial tooling costs, of both the machine and the job-specific press tool, are high. This limits punch work from being used for much small-volume and prototype ...

5. Folding-Fin Aerial Rocket - Wikipedia

   en.wikipedia.org/wiki/Folding-Fin_Aerial_Rocket

   Launcher, 2.75-inch rocket, seven-tube, reloadable, reusable; 7-tube 70 mm (2.75”) rocket launcher XM157A 7-tube 70 mm (2.75") rocket launcher; not compatible with Mk 66 rocket motor; USAF LAU-32A/A XM157B XM157A variant; longer launch tubes, capable of further mounting an XM118 dispenser XM158/M158

6. Schiffli embroidery machine - Wikipedia

   en.wikipedia.org/wiki/Schiffli_embroidery_machine

   The conversion of the design into a punch card was known as punching. Card reader fully automated schiffli embroidery machine by Saurer. Needle spacing, or pitch, limited the width of the embroidered design. The spacing between the needles is known as rapport. The unit for measuring spacing was the French inch (1.08 English inch).

7. QF 5.25-inch naval gun - Wikipedia

   en.wikipedia.org/wiki/QF_5.25-inch_naval_gun

   Inside a 5.25-inch gun turret on HMS King George V in 1943. The QF 5.25 guns performed well on HMS Prince of Wales during Operation Halberd , escorting a convoy to Malta under, but later Prince of Wales was overwhelmed and sunk while operating along with Repulse when Force Z was attacked by Japanese aircraft, due to factors unrelated to the ...