list of equipment pairs

This is a list of equipment, tools, instruments or machines that come in pairs or are used in pairs. For a complete listing of pairs see Lists of pairs. For a list sorted by name see List of pairs by name.

Atlas & Gazetteer (complementary)
Battledore & Shuttlecock (complementary)
Block & tackle (complementary)
Brace & bit (complementary)
Bow & Arrow (complementary)
Coat & tie (proverbial/idiomatic; complementary) (The two required articles constituting formal dress)
Drum and bugle corps (complementary) Marching band musical complement.
Fife & Drum (complementary) Traditional military instrumental pair
Piston & Cylinder (complementary)
Plug & Socket (complementary)
Rod & reel (complementary)
Ruler & compass (technical; complementary) The two instruments whose use is permitted in formal geometrical constructions.

*Tool & Die (complementary)

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