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Spirit level
A
spirit level
,
bubble level
or simply a
level
is an
instrument
designed to indicate whether a surface is
horizontal
(level) or
vertical
(
plumb
). Different types of spirit levels may be used by
carpenters
,
stonemasons
,
bricklayers
, other building trades workers,
surveyor
s,
millwrights
and other metalworkers, and in some
photographic
or
videographic
work.
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