- A
plumb bob,
plumb bob
level, or plummet, is a weight,
usually with a
pointed tip on the bottom,
suspended from a
string and used as a
vertical direction...
-
spirit level,
bubble level, or
simply a
level, is an
instrument designed to
indicate whether a
surface is
horizontal (
level) or
vertical (
plumb). Two basic...
- beds or strata, or the
slope of an
embankment or cutting; a kind of
plumb level. Some
automotive safety systems.
Indicating pitch and roll of vehicles...
-
designated as
vertical is
usually that
along which a
plumb-bob hangs. Alternatively, a
spirit level that
exploits the
buoyancy of an air
bubble and its...
- Mean sea
level (MSL,
often shortened to sea
level) is an
average surface level of one or more
among Earth's
coastal bodies of
water from
which heights...
-
suspension (cars) Some
suspension bridges Some
swing bridges A-frame
level: An A-frame with a
plumb line hung from the vertex, used to
establish a
horizontal line;...
- of the
instrument is not
perfectly plumb. The
surveyor sets the
instrument up
quickly and does not have to re-
level it
carefully each time they
sight on...
- repeated. The
board is cut
along the
dotted lines, and the top
plumb cut and the
bottom level cut are
traced by
holding the
square on the
opposite side. The...
-
cornerstone on
January 18, 1904, murmuring, "I
declare this
stone to be laid
plumb,
level and square." The building—still
under construction—was used to announce...
- A
laser line
level is a tool
combining a
spirit level and/or
plumb bob with a
laser to
display an
accurately horizontal or
vertical illuminated line on...
