Spirit levels
Pick a level by centimetres and MAGNET vs LEVEL. A 23 cm torpedo is not a 200 cm rail.How to choose a spirit level.
A spirit level shows whether a shelf, door frame or threshold is true. You will find pocket, 60 cm and longer profiles, some with a magnet for steel.
Match length to the job — a short level for a socket, a long one for a kitchen run. Laser levels, where stocked, sit with digital measuring tools.