1. Tool holders are specially made for clamping of small tools and are manufactured of cheap mild steel.
2. The lathe bed which is supported by the pedestal carries all lathe parts.
3. Steel is much stronger than wood and is more expensive than aluminium.
4.The apparatus consist of a calorimeter which is made of aluminium or copper.
5. A string made of nylon is attatched to one end of the block and passes over a pulley at the top of the slope.