Answer:

Plumb bob

Explanation:

• A plumb bob, or plummet, is a weight, usually with a pointed tip on the bottom, suspended from a string and used as a vertical reference foot,inch, or plumb-line. It is a precursor to the spirit level and used to establish a vertical datum. It is typically made of stone, wood, or lead but can also be made of other metals.

Answer:

Pull push rule

Explanation:

A push pull rule is a measuring tape that coils into a compact case. It is used for measuring long, short, straight lengths.

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