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2. Watts Brothers Tool Works - Wikipedia

   en.wikipedia.org/wiki/Watts_Brothers_Tool_Works

   The Harry Watts square drill bit is based on a Reuleaux triangle shape. It is used together with a guide and a particular chuck to make a square hole. [3] [4] Similarly, the company also manufactures drill bits for other angular holes such as pentagons and hexagons.

3. Machine taper - Wikipedia

   en.wikipedia.org/wiki/Machine_taper

   The Jacobs Taper (abbreviated JT) is commonly used to secure drill press chucks to an arbor. The taper angles are not consistent varying from 1.41° per side for No. 0 (and the obscure # 2 + 1 ⁄ 2) to 2.33° per side for No. 2 (and No. 2 short). There are also several sizes between No. 2 and No. 3: No. 2 short, No. 6 and No. 33.

4. Drill press - Wikipedia

   en.wikipedia.org/wiki/Drill_press

   Benchtop drill press (left) and floor-standing drill press (right) A drill press is a drilling machine suitable for quick and easy drilling of straight holes, countersinking or counterboring that are perpendicular to both directions of a table surface. In comparison, it is more difficult and less repeatable to drill perpendicularly with a hand ...

5. Chuck (engineering) - Wikipedia

   en.wikipedia.org/wiki/Chuck_(engineering)

   A pin chuck is a specialized chuck designed to hold small drills (less than 1 mm (0.039 in) in diameter) that could not be held securely in a normal drill chuck. The drill is inserted into the pin chuck and tightened; the pin chuck has a shaft which is then inserted into the larger drill chuck to hold the drill securely. Pin chucks are also ...

6. Apex Tool Group - Wikipedia

   en.wikipedia.org/wiki/Apex_Tool_Group

   Winner of Popular Mechanics' 2006 Breakthrough Award for its Rapid-Slide variant. [4] Acquired by Cooper in 1968. Delta – tool boxes; Erem – Precision pliers. GearWrench – Ratcheting wrenches and hand tools; H.K. Porter – Bolt and cable cutters. Iseli – Precision matched parts; Jacob's Chuck – drill chucks; JOBOX – truck boxes and ...

7. Nassau County flags not lowered to half-staff for Jimmy Carter

   www.aol.com/news/nassau-county-flags-not-lowered...

   MINEOLA, N.Y. — A Republican official who oversees Nassau County on New York's Long Island has seemingly refused to lower flags to half-staff in memory of the late Democratic President Jimmy ...