Cancel Evolve Mispend mechanical spirit level random The beginning academic
New 1PCS High precision 0.02mm 100mm/150mm/200mm industrial level Mechanical Bar Level spirit level Instrument Measuring Tool - AliExpress
An old engraving of Sibley's cast-iron level. It is from a Victorian mechanical engineering book of the 1880s. This has a circular table and a viewing sight at one end. A plumb