Spirit Levels & Inclinometers

Spirit levels also known as bubble levels are invaluable for precision levelling measurement in a multitude of jobs, from something as simple as putting a shelf up to checking how level bricks are in a new wall. This hand held tool is easy to use and a simple way to maintain accuracy on the job. Spirit levels use a liquid filled vial with an air bubble inside. Guides on the vial indicate when the bubble is centred showing the user that it is level. Digital spirit levels also feature a digital readout for extra accuracy and assurance. For best results try to use the longest level that fits on the surface that is being checked on either the horizontal or vertical (plumb) planes.


An inclinometer sometimes known as clinometer is used for measuring the angles of slope or elevation, similar to a spirit level they can use various methods to measure and can be both analogue and digital read outs. Most commonly featuring a gravity-based pendulum others can use a spirit vial. Modern electronic inclinometers can be more precise with the digital measuring systems utilising gyroscopes and are becoming more popular than the classic spirit level due to higher requirements of precision, resolution, reliability, data storage and documenting.


RS Components offer a wide selection including block, box section, bulls eye, straight and torpedo levels.


Characteristics to consider can include:


    Accuracy – shown as a plus (+) or minus (-)

    Bubble size – larger is better for viewing and should always be inside the marked lines. The bubble size is related to which liquid is used, (expands when hot and contacts when cold thus affecting the size).

    Colour – the liquid is coloured to make the bubble easier to see, this colour can fade over time and exposure to the sun

    Lines on the tube or vial – these reading lines should be clear

    Construction – the vial is delicate so care is needed, ideally the ends should be rubber and be sturdy and robust. Aluminium levels are ideal for building sites. Hand holds are also useful.

    Other useful features include a V-groove in the surface which can fit against pipes, or magnets (magnetic base) these magnetic spirit levels allows them to be used ’hands free', convenient for steelwork.

Who uses spirit levels and inclinometers?


    Carpenters

    Stonemasons

    Bricklayers

    Surveyors

Why so some spirit levels have two bubbles?


A dual-vial system means that the two vials on the level work on whether it is lying on either its top or bottom edges.


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Description Price Level Type Length Frame Material Number of Vials Accuracy Waterproof Magnetic Pocket Level Milled Surface Calibrated Dimensions User Calibrated Battery Type Height
RS stock no. 432-536
Mfr. Part No.DZ800
BrandStarrett
R 35.66
Each
units
Bulls Eye 42mm Plastic 1 - Yes - - - - - - - -
RS stock no. 667-3916
BrandRS PRO
R 1,931.07
Each
units
- 175mm - - ±0.2 ° - - - - - 175 x 21.4 x 54mm - 9V 54mm
RS stock no. 851-3548
BrandRS PRO
R 85.09
Each
units
- 130mm Steel - ±0.5 ° - Yes - - - 130 x 17 x 110mm - - 17mm
RS stock no. 785-7897
BrandRS PRO
R 2,887.32
Each
units
Precision Shaft Level 150mm - 1 0.02 mm/m - - - - - 150 x 40 x 46mm Yes - 44mm
RS stock no. 667-3913
BrandRS PRO
R 63.48
Each
units
Bulls Eye 25mm Metal 1 ±2 mm/m - - - - - 21.5 (Dia.) x 10mm - - 10mm
RS stock no. 724-3844
Mfr. Part No.7804
BrandStabila
R 133.53
Each
units
Cross Test Level 60mm Plastic 2 - - - - - - - - - 14mm
RS stock no. 785-7890
BrandRS PRO
R 3,336.52
Each
units
Precision Shaft Level 200mm - 1 0.02 mm/m - - - - - 200 x 46 x 46mm Yes - 46mm
RS stock no. 776-9797
Mfr. Part No.0-42-087
BrandStanley
R 2,569.53
Each
units
Box Section 400mm Anodised Aluminium 2 ±0.1 ° - - - - - - - - -
RS stock no. 724-3829
Mfr. Part No.016123RS
BrandSola
R 180.44
Each
units
Block 95mm Acrylic - ±1 mm/m Yes - - - - - - - -
RS stock no. 251-7178
Mfr. Part No.T3482
BrandCK
R 223.40
Each
units
Torpedo 210mm Plastic 3 - - Yes Yes - - - - - -
RS stock no. 304-8960
R 3,551.35
Each
units
- 200mm - - ±0.1 mm/m - - - - - - - - -
RS stock no. 724-3778
Mfr. Part No.DW886
BrandStarrett
R 2,530.70
Each
units
- 154mm Cast Iron - - - - - - - - - - -
RS stock no. 603-930
Mfr. Part No.DW887
BrandStarrett
R 3,827.39
Each
units
- 310mm Cast Iron - - - - - - - - - - -
RS stock no. 851-3539
BrandRS PRO
R 40.36
Each
units
Cross Test Level 60mm Plastic 2 - - - Yes - - 60 x 13.5 x 45mm - - 13.5mm
RS stock no. 288-3920
Mfr. Part No.1481401
BrandSola
R 2,471.47
Each
units
Box Section - Aluminium - ±0.5 mm/m - - - Yes - - - - -
RS stock no. 724-3787
Mfr. Part No.DX010
BrandStarrett
R 471.84
Each
units
Cross Test Level 70mm Cast Iron 2 - No - - - - - - - -
RS stock no. 320-7484
Mfr. Part No.0.601.076.500
BrandBosch
R 3,761.72
Each
units
- 400mm - - ±0.05 ° - - - - - 400 x 33 x 60mm - AA 60mm
RS stock no. 263-9329
BrandRS PRO
R 3,856.40
Each
units
- 24in Anodised Aluminium 2 0.5 mm/m - - - - - - Yes AAA -
RS stock no. 724-3825
Mfr. Part No.LB-000JPRS
BrandSola
R 220.32
Each
units
3-Axis Post Level 140mm Plastic 3 - Yes - - - - - - - -
RS stock no. 724-3737
Mfr. Part No.0-43-609
BrandStanley
R 624.58
Each
units
Torpedo 250mm Die Cast Aluminium 3 ±0.5 mm/m Yes Yes - - - - - - -