Metric Size, Aluminum or Plastic
Bull's-Eye Levels

For Installation in Recessed Bore Holes and Housings

GN 2281



RoHS Compliant

This line drawing is movable on the page...just click and drag!
Specification
Information

Housing:
Version ALS--
Aluminum, anodized, black finish
Viewing window glass
Version KT--
Plastic, white
Viewing window transparent plastic
Filling:
Type K--Colorless-transparent
Type G--Green-transparent (Version KT only)
Casting compound: Mineral-based

Sensitivity for Version ALS: 10 angle minutes, bubble moves by 2 mm
Sensitivity for Version KT: 40 angle minutes, bubble moves by 2 mm

Style 1 - Without contrast ring
Style 2 - With contrast ring (only on Version KT with d=12-18 mm)

Shipping

General Information on bull's-eye levels and screw levels

Due to their cylindrical design, GN 2281 bull's-eye levels are suitable for installation in recessed bore holes and housings where they serve to check the horizontal position of jigs, machines and devices.
Bull's-eye levels are not aligned, i.e. there is no reference to the external outline of the level. The vertical position must be ensured by aligning the holding/building element.
The black housing of the version ALS creates a reflection at the edge of the bubble which significantly improves the readability. Version KT with d=12-18 is available with contrast ring inside the air level housing (Style 2) which creates the same effect.
Alternatively, the contrast can also be improved by a dark surface inside the mounting bore hole.

Available upon request:
• Other sensitivities

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Version ALS - Aluminum Housing
Without Contrast Ring, Colorless Filling, Sensitivity 10

Dimensions in:

millimeters
(inches)

Part Number
d
h1
10
(.39)
6.9
(.28)
12
(.47)
6.4
(.26)
14
(.55)
6.2
(.25)
15
(.59)
7.4
(.29)
18
(.71)
7.3
(.29)
 
Version KT - Plastic Housing
Sensitivity 40

Dimensions in:

millimeters
(inches)

Part Number
d
h2
Without Contrast Ring With Contrast Ring
Colorless Filling
Green Filling
Colorless Filling
Green Filling
-- --
10
(.39)
6
(.24)
12
(.47)
7
(.28)
14
(.55)
8
(.31)
15
(.59)
8
(.31)
18
(.71)
9
(.35)