This is a Master Precision Level for accurately checking the work of machinists and toolmakers, the setting up of machinery, and other work that requires extreme leveling accuracy.
The main level vial is graduated to 10 second accuracy (1 division equals .0005 per foot)
This is an auxiliary level which enables the user to check side declinations
The body of the level is of cast iron and the base is hand scraped for extreme accuracy
There are plastic knobs on the frame to insulate the instrument from the heat of the hand
