i. Scriber: It is used to mark on draw lines or metals before cutting or drilling
ii Spring divider: It is used to draw arcs, circles or lines on metals
iii. Centre punch: It is used to mark or locate a point with the aid of a hammer before drilling or cutting.
iv. Trammel: It is used to mark large arcs or circles on metals
v. Dot punch : Used to locate points on metals in form of dots.
vi. Odd – leg calipers: Used to find out the centre of a round bar.

![A spring balance, which is suspended from the roof of a lift, carries a mass of 1kg at its free end. If the lift accelerates upwards at 2.5ms‾², determine the reading on the spring balance. [g = 10ms‾²] A spring balance, which is suspended from the roof of a lift, carries a mass of 1kg at its free end. If the lift accelerates upwards at 2.5ms‾², determine the reading on the spring balance. [g = 10ms‾²]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png)