A  459cmcompassgraduated scaleless than to the third sideonesquaresstraight edge, on one side of which centimetres and millimetres are marked off and on the other side inches and their parts are marked off.

A pair of set -  459cmcompassgraduated scaleless than to the third sideonesquaresstraight edge, one with angles 90°, 60° and 30° and other with angles90°, 45° and 45°.

A pair of  459cmcompassgraduated scaleless than to the third sideonesquaresstraight edge, with provision of fitting a pencil at one end.

A geometrical construction is the process of drawing a geometrical figure using only two instruments – an ungraduated ruler, also called a  459cmcompassgraduated scaleless than to the third sideonesquaresstraight edge and a  459cmcompassgraduated scaleless than to the third sideonesquaresstraight edge.

To construct a triangle we must know atleast its  459cmcompassgraduated scaleless than to the third sideonesquaresstraight edge parts.

The construction of a triangle is possible only when the difference of any two sides is a triangle is  459cmcompassgraduated scaleless than to the third sideonesquaresstraight edge.

To construct a angle of 45/2 degrees,we bisect an angle of  459cmcompassgraduated scaleless than to the third sideonesquaresstraight edgedegrees.

The construction of aΔLMNin which LM = 8 cm, ∠L=45ois possible when (MN + LN) is  459cmcompassgraduated scaleless than to the third sideonesquaresstraight edge.