Measuring Spirit Level Tools, We offer Spirit Level plane measuring tools that help determine whether a surface is level or inclined. The tool offers an estimate about plane surfaces and is vital to both carpenters and the construction sector. Being a measuring tool, the hacksaw has been designed keeping accuracy in mind. The spirit level bubble can be easily viewed through he viewing glass and adjustments can be made as required. The tool is also used as a surveying instrument and was first used in telescopes.