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2. Glossary of climbing terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_climbing_terms

   A A-grade Also aid climbing grade. The technical difficulty grading system for aid climbing (both for "original" and an adapted version for "new wave"), which goes: A0, A1, A2, A3, A4, A5 and up to A6 (for "new wave"). See C-grade. Abalakov thread Abalakov thread Also V-thread. A type of anchor used in abseiling especially in winter and in ice climbing. ABD Also assisted braking device. A term ...

3. Rock-climbing equipment - Wikipedia

   en.wikipedia.org/wiki/Rock-climbing_equipment

   Their construction from leather or other hard-wearing materials, generally improves grip with the rope, which lessens the risk of a failure of the belay system. [38] Climbing shoes are designed to increase the friction, and thus the grip, between the foot and the climbing surface with a vulcanized rubber sole. Stiffer shoes are used for "edging ...

4. Bottom dealing - Wikipedia

   en.wikipedia.org/wiki/Bottom_dealing

   Bottom dealing or base dealing is a sleight of hand technique in which the bottom card from a deck of playing cards is dealt instead of the top card. It is used by magicians as a type of card illusion, and by card sharps and mechanics, and as a method of cheating in poker or other card games.

5. Production packer - Wikipedia

   en.wikipedia.org/wiki/Production_packer

   A production packer is designed to grip and seal against the casing ID. Gripping is accomplished with metal wedges called "slips." These components have sharpened, carburized teeth that dig into the metal of the casing. Sealing is accomplished with large, cylindrical rubber elements.

6. Anti-slip grating - Wikipedia

   en.wikipedia.org/wiki/Anti-slip_grating

   Anti-slip steel grating is a type of bar grating. Steel bar grating is manufactured in a variety of methods. Welded bar grating consists of load bars electrically fuse welded to cross bars. Pressure-locked bar grating, or swaged grating, is where steel rods are forced through and locked in load bars. Riveted bar grating is where the load bars ...

7. Double bridle - Wikipedia

   en.wikipedia.org/wiki/Double_bridle

   The double bridle differs from the usual snaffle bridle in that it consists of four reins attached to two separate bits: the bradoon-style snaffle and a curb. The curb bit hangs down from the main headstall, and the bradoon has a separate, simpler headstall made from a narrow piece of leather known as a "bradoon hanger" or a "slip head."