The frame spirit level is a control instrument used to verify horizontality, verticality and correct alignment of guideways, slides and mechanical references. Its frame shape makes it particularly useful when inspections must be carried out on both horizontal and vertical surfaces, while maintaining one stable instrument and one reliable reference.
In mechanical applications, a frame spirit level is mainly used for checking machine tool guideways and other mechanical structures where the correct behavior of sliding systems must be verified. Used in multiple positions along the guideway, it helps check level variation and identify possible alignment problems or geometrical defects along the travel path.
An important feature of this instrument is the presence of 2 prismatic faces and 2 flat ground faces. This configuration expands the support possibilities and makes the level suitable for inspections on different references, not only on flat surfaces but also on mechanical geometries requiring more guided contact. Ground surfaces help maintain correct contact during inspection, which is essential when working with high sensitivity.
The instrument also includes a thermally insulated handle, useful for reducing heat transfer from the operator’s hand to the instrument during use. This is important in more sensitive inspections because it helps preserve reading stability and supports more correct use from an operational point of view.
The 0.02 mm/m sensitivity makes this level suitable for inspections where even small variations must be read carefully. For this reason, it is not a generic workshop spirit level, but a technical instrument for more refined inspections such as installation, geometric revision, periodic inspection and checking of guideways and slides.
From an application point of view, the frame spirit level is very useful for checking horizontal and vertical guideways, slides, machine beds, support structures and mechanical references that must maintain correct geometrical alignment. It is also practical during maintenance and realignment operations, when it is necessary to understand whether a machine or structure is still working within the required conditions.
Another advantage of the frame shape is practicality during crossed inspections. The instrument can be used to check both the horizontal and vertical components consistently, which is useful when working on machine tools, guideways and sliding systems where both conditions are important.
The level is available in 150 × 150 mm, 200 × 200 mm and 250 × 250 mm sizes, all with 0.02 mm/m sensitivity. This allows the most suitable version to be selected according to the size of the reference to be checked and the available inspection space.
In summary, the frame spirit level is a strong solution for users who need to check guideways and slides with a stable, technical instrument suitable for horizontality and verticality inspections on precision mechanical references.
Applications
- Inspection of machine tool guideways
- Verification of horizontality and verticality of mechanical slides
- Geometrical inspection of slides, benches and machine beds
- Checking mechanical structures during installation and maintenance
- Verification of flat and prismatic ground references
- Workshop, tooling and quality control inspections
- Inspections during machine realignment and geometrical revision
FAQ – Frame spirit level
What is a frame spirit level?
It is a control instrument used to verify level and inclination on mechanical references, with a frame shape that allows inspections both horizontally and vertically.
What is a frame spirit level used for?
It is used to check the alignment of guideways, slides and mechanical surfaces where horizontality and verticality must be verified.
Why is it useful on machine tool guideways?
Because it helps check the behavior of the guideway along its travel path and identify variations that may indicate alignment issues or geometrical defects.
What does 2 prismatic faces and 2 flat ground faces mean?
It means the instrument offers multiple support surfaces, useful for adapting to different mechanical references and ensuring correct contact during inspection.
What is the advantage of the frame shape compared to a linear spirit level?
The frame shape is particularly practical when inspections must be carried out on both horizontal and vertical references while maintaining stable support.
What does 0.02 mm/m sensitivity mean?
It indicates the sensitivity of the level when reading inclination and is suitable for technical inspections where even small deviations must be detected.
Which inspections is it most commonly used for?
It is mainly used on machine tool guideways, mechanical slides, machine beds and structures requiring accurate level checks.
Is it used only on machine tools?
No, it can also be used on other mechanical structures where correct alignment of surfaces and slides must be checked.
Why are ground surfaces important?
They help ensure correct and repeatable support, which is essential for a sensitive instrument intended for precise inspections.
Which sizes are available?
The level is available in 150 × 150 mm, 200 × 200 mm and 250 × 250 mm sizes.
How should the correct size be selected?
Smaller versions are practical in confined spaces or on compact references, while larger versions are more convenient on wider surfaces.
What common mistakes should be avoided when using a frame spirit level?
Common mistakes include placing the instrument on dirty or burred surfaces, using it on unclean references or reading the bubble before the instrument has stabilized correctly.
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| Code | Dimension (mm) | Accuracy |
| SAS1000-150C | 150X150 | 0,02 |
| SAS1000-200C | 200X200 | 0,02 |
| SAS1000-250C | 250X250 | 0,02 |
