Qué (quién) es Y level - definición

ANY INSTRUMENT DESIGNED TO INDICATE WHETHER A SURFACE IS HORIZONTAL (LEVEL) OR VERTICAL (PLUMB)

Builder's level; Leveling instrument; Automatic level; Levelling device; Dumpy level; Levelling instrument; Surveying level; Optical level; Y level; Wye level; Contractors level

Y level

·- ·see under Y, ·noun.

Spirit level

INSTRUMENT WITH A SEALED TUBE OF LIQUID, DESIGNED TO INDICATE WHETHER A SURFACE IS HORIZONTAL (LEVEL) OR VERTICAL (PLUMB)

Waterlevel; Spirit-level; Bubble level; Torpedo level; Tube level; Level (tool); Spirit Level; Carpenter's 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, surveyors, millwrights and other metalworkers, and in some photographic or videographic work.

https://en.wikipedia.org/wiki/Spirit_level

spirit level

INSTRUMENT WITH A SEALED TUBE OF LIQUID, DESIGNED TO INDICATE WHETHER A SURFACE IS HORIZONTAL (LEVEL) OR VERTICAL (PLUMB)

Waterlevel; Spirit-level; Bubble level; Torpedo level; Tube level; Level (tool); Spirit Level; Carpenter's level

¦ noun a device consisting of a sealed glass tube partially filled with alcohol or other liquid, containing an air bubble whose position reveals whether a surface is perfectly level.

Wikipedia

Level (instrument)

A level is an optical instrument used to establish or verify points in the same horizontal plane in a process known as levelling. It is used in conjunction with a levelling staff to establish the relative height or levels (the vertical separation) of objects or marks. It is widely used in surveying and construction to measure height differences and to transfer, measure, and set heights of known objects or marks.

It is also known as a surveyor's level, builder's level, dumpy level or the historic "Y" level. It operates on the principle of establishing a visual level relationship between two or more points, for which an inbuilt telescope and a highly accurate bubble level are used to achieve the necessary accuracy. Traditionally the instrument was completely adjusted manually to ensure a level line of sight, but modern automatic versions self-compensate for slight errors in the coarse levelling of the instrument, and are thereby quicker to use.

The optical level should not be confused with a theodolite, which can also measure angles in the vertical plane.

https://en.wikipedia.org/wiki/Level (instrument)