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GN 2282

Screw-On Spirit Levels

for mounting with screws

GN 2282

Screw-On Spirit Levels
Screw-on levels

GN 2282

Screw-On Spirit Levels
Screw-on levels

Sensitivity

  • Type 6: Angle minutes, bubble move by 2mm
  • Type 50: Angle minutes, bubble move by 2mm

Identification no.

  • No. 1: Viewing window top
  • No. 2: Viewing window top - front
  • No. 3: Viewing window top - front - back

Housing brass

plastic coated, textured finish

black, RAL 9005 MSW

silver, RAL 9006 MSR

Spirit level element

Glass plastic body

Filling

green-transparent G

Casting compound

mineral-based

Screw-on levels GN 2282 are used to check the horizontal position of jigs, machines, devices, appliances and instruments.

The spirit levels are aligned in relation to the finished reference surface so that the bubble is centered in the middle of the marking lines once the horizontal position of the contact surface in the longitudinal direction is reached.

  • Filling, colourless-transparent
  • Other sensitivities
  • Other colours

Definition of terms

A spirit level is hollow body filled with a fluid and a gas bubble which is used to check the horizontal position of an object. The position of the gas bubble in the fluid shows the angle and the direction at which the object is inclined in relation to the horizontal level.

The function

The hollow body containing the fluid and the gas bubble has a defined radius at its topic side, causing the gas bubble to float by its buoyancy always to the highest point.

The transparent upper section normally carries markings or a circle centric to the biddle position. If the gas bubble is centered precisely inside the merking and if the air level is properly adjusted, the object to be checked is in the horizontal position.

 

Types of spirit levels

Spirit levels are available as bull´s eye levels or screw-on levels.

Bull´s eye levels simultaneously measure the angle of inclination and the angular position, e.g. of a certain level, whereas screw-on levels indicate the angle of inclination in one dimension only along the axis of the level.

Sensitivity

The sensitivity of spirit levels is given as angle of inclination, e.g. 30 angular minutes or 0.5 degrees. This is the angle of inclination by which the spirit level must be tilted to make the bubble move by 2 mm. A spirit level with a sensitivity of 6 angular minutes therefore has a higher sensitivity than a spirit level with a sensitivity of 30 angular minutes.

 

Angle of inclination and difference in altitude

Sensitivity is sometimes also given in millimetre per metre, i.e. as difference in altitude per unit of the length. See also the reference table opposite.

Difference in altitudeAngle w-
in milimetre per metrein angular minutesDegree, decimal
0.310.0167
0.930.0500
1.760.1000
2.9100.1667
5.8200.3333
8.7300.5000
11.6400.6667
14.5500.8333
17.5601.0000

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