2) What is the name of tool used for setting `angle in brick masonry?

3) Which surfaces are recommended with cement paint, emulsion paint, oilpaint and silverate paint?

4) What is the term used for covering or killings of all knots in wood surface by red lead?

5) Which metal consists of copper and tin?

6) Which is the market form of timber with parallel sides having thickness less than 50 mm and its width exceed 50 mm?