The 'binoculars' group
These nouns refer to tools and instruments. Although they refer to a single object, they are sometimes used with pair.
bellows binoculars calipers castanets clippers compasses dividers field-glasses forceps nail scissors pincers pliers scales scissors secateurs shears steps tongs tweezers
He took out a small pair of binoculars and began his reconnaissance.
The boy stabbed my daughter in the leg with some scissors, causing horrific injuries.
These point-ended tweezers are accurate to a hair's-breadth and capable of pulling the shortest hair.