Geometrical Instrument Box: O Box with lid made of seasoned teak; O Thickness Minimum 8 mm; O Scale: Length 15 inch/38cm. O Pair of set Squires: Length 12 inch/33 cm.; O Protractor: Dia12 inch/30.5 cm; O Items are properly scaled in British and Metric units as standard; O Made of hard plastic wood /seasoned kerosene wood with handle (Super glue affixed); O Compass and dividers with good quality pin and rod assembled. Show More