Figure below show..

As you chosen answer from the previous question, state the answer on the missing line.

Figure below show..

Steel Square other purposes are used to measure angel. What is the accurate angel can it be?

The large mason's square is used to layout guidelines and to check inside and outside corners during buildings. As it is made of steel, it will rust. Keep it lightly oiled.

This is a broad chisel used together with a hammer for cutting bricks or cutting chases in brickwork

This is used to ensure that the vertical faces of the work are true and that the structure is level.

In bricklaying, measuring tape are mandatory tools. What are common unit usually we used?

Below are way of checking levelling. What are this?