Line level is the specified strength of an audio signal used to transmit analog sound between audio components such as CD and DVD players, television sets...

spirit levels for different uses: Carpenter's level (either wood, aluminium or composite materials) Mason's level Torpedo level Post level Line level Engineer's...

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 a...

and used as a vertical direction as a reference line, or plumb-line. It is a precursor to the spirit level and used to establish a vertical datum. It is...

The A-level (Advanced Level) is a subject-based qualification conferred as part of the General Certificate of Education, as well as a school leaving qualification...

Levelling or leveling (American English; see spelling differences) is a branch of surveying, the object of which is to establish or verify or measure...

Look up Line, line, or líne in Wiktionary, the free dictionary. Line most often refers to: Line (geometry), object that has zero thickness and curvature...

independent variables is two, a level set is called a level curve, also known as contour line or isoline; so a level curve is the set of all real-valued...

concept of a laser level has been around since at least the early 1970s, the original spinning-mirror design laser plane and line level was patented by the...

bubble level are used to achieve the necessary accuracy. Traditionally the instrument was completely adjusted manually to ensure a level line of sight...