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2. Nail (fastener) - Wikipedia

   en.wikipedia.org/wiki/Nail_(fastener)

   Common nail – smooth shank, wire nail with a heavy, flat head. The typical nail for framing; Convex head (nipple head, springhead) roofing nail – an umbrella shaped head with a rubber gasket for fastening metal roofing, usually with a ring shank; Copper nail – nails made of copper for use with copper flashing or slate shingles etc.

3. Nail gun - Wikipedia

   en.wikipedia.org/wiki/Nail_gun

   Some full head nail guns, especially those used for pallet making and roofing, use long plastic or wire collated coils. Some strip nailers use a clipped head so the nails can be closer together, which allows less frequent reloading. Clip head nails are sometimes banned by state or local building codes.

4. Knob-and-tube wiring - Wikipedia

   en.wikipedia.org/wiki/Knob-and-tube_wiring

   By wrapping electrical wires around the knob, and securing them with tie wires, the knob could be used to securely and permanently anchor the wire. The knobs separated the wire from potentially combustible framework, facilitated changes in direction, and ensured that wires were not subject to excessive tension.

5. Electrical wiring - Wikipedia

   en.wikipedia.org/wiki/Electrical_wiring

   The first rubber-insulated cables for US building wiring were introduced in 1922 with US patent 1458803, Burley, Harry & Rooney, Henry, "Insulated electric wire", issued 1923-06-12, assigned to Boston Insulated Wire and Cable . These were two or more solid copper electrical wires with rubber insulation, plus woven cotton cloth over each ...

6. Crocodile clip - Wikipedia

   en.wikipedia.org/wiki/Crocodile_clip

   Alligator clip A crocodile clip manufactured by Mueller Electric. This device is a variation of Dusinberre's original crocodile clip design Crocodile clips, also called automotive clips, on a set of jumper cables Three crocodile clips: a bare standard-sized clip; a miniature clip in a yellow plastic boot; a large red Square D multi-function clip

7. AOL Mail

   mail.aol.com

   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!