The simplest instrument used for setting right angles is a _____ Options: A . &nbspCross staff B . &nbspOptical square C . &nbspPrism square D . &nbspSite square

The simplest instrument used for setting right angles is a ____

Question

The simplest instrument used for setting right angles is a _____

Options:

A . Cross staff

B . Optical square

C . Prism square

D . Site square

Answer: Option A
Answer: (a).Cross staff

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