PRO pipe spirit level 20m – Precise leveling over long distances
Are you looking for a reliable, simple and extremely accurate solution for leveling two very distant points where classic spirit levels are simply too short? The PRO 20-meter tubular spirit level (SKU: MW042) is an indispensable professional tool for every builder, craftsman and demanding DIYer. This traditional but extremely effective tubular spirit level (also known in practice as a "sling level") allows for flawless transfer of height points over greater distances with superior accuracy dictated by the inexorable laws of physics.
Whether you are laying foundations, leveling screeds, installing suspended ceilings, carrying out drywall work or planning to lay paving stones, this 20-metre pipe spirit level will ensure that your measurements are perfectly accurate. Forget about expensive and sensitive electronic devices and rotating lasers that require constant calibration, expensive maintenance and batteries - the classic pipe spirit level works anytime, anywhere and in all weather conditions.
The main advantages of using the PRO pipe spirit level
The main advantage of the tube spirit level is its ease of use and complete infallibility. It works on the physical principle of a connecting vessel, which means that the water level in both measuring tubes always automatically adjusts to exactly the same height. The PRO model with a tube length of 20 meters allows you to work smoothly in larger rooms or even between different rooms and around corners or wall partitions, which is physically impossible to do with standard bubble levels.
The tool is equipped with two ergonomically designed, fully transparent measuring tubes made of durable plastic, which are finished with practical sealing plugs. These plugs effectively prevent unwanted water spillage during transportation and movement around the construction site, saving you valuable time and preventing unnecessary wetting of work surfaces.
Key features and technical advantages

Exceptional 20-meter length (SKU: MW042): Allows for easy leveling and transfer of elevation points over long distances and around obstacles, pillars or walls without loss of accuracy.
Clear and transparent measuring scale: Both plastic measuring tubes (measuring cups) are equipped with a precise, contrasting and clearly visible scale for quick and flawless reading of the water level.
Safety plastic plugs: The pipes are tightly closed with convenient plugs that prevent liquid from leaking during transport, movement or during preparation for work.
High-quality flexible transparent tube: Made of durable material that allows unhindered water flow and clear visibility of air bubbles, which must be removed before measurement.
Versatile professional use: The ideal tool for construction, finishing, masonry, carpentry and assembly work indoors or outdoors.

How to use a pipe spirit level correctly and accurately?
Using the PRO pipe spirit level is extremely simple, but requires following some basic steps to ensure maximum accuracy in your work:

Filling the tube with water: Fill the flexible tube with clean water (you can lightly color it with a marker or food coloring for even better visibility). When filling, make sure that no air bubbles remain in the tube, as these can affect the final accuracy of the measurement.
Checking the balance (calibration): Before starting the measurement, place both measuring tubes close together at the same height. The water level in both tubes must align at exactly the same mark on the scale.
Taking the measurement: Place the first measuring tube at the starting (reference) height point. Carry the second measuring tube to the location you want to level. Once the water fluctuation in the tube has completely calmed down, simply mark the height at the new location.

For a visual demonstration of proper use and practical tricks, watch the video below:


Click here to watch a video demonstration of using a pipe spirit level


Frequently Asked Questions (FAQ) about the product
How does a pipe spirit level ensure accuracy at a distance of 20 meters?
The PRO pipe spirit level works on the simple but infallible physical law of connected vessels. The liquid in two interconnected vessels always settles at exactly the same height (in the horizontal plane), regardless of the length of the pipe, the distance between them or any obstacles in between. This ensures 100% measurement accuracy without the need for constant calibration or adjustment of the device.
What should I do if air bubbles appear in the pipe during work?
The presence of air bubbles in the pipe can cause deviations in measurements. Before starting work, always make sure that the pipe is completely filled with water without air pockets. If you notice bubbles, gently shake the pipe, tap it on the floor or run water through it again until the bubbles completely disappear from the system.
Can I leave the water in the level stored for a long time?
Although the supplied plastic plugs are designed to reliably prevent liquid spillage during work and transport, we strongly recommend that you pour out the water and dry the hose after finishing work. This will prevent algae, scale or sediment from accumulating inside the hose, which could impair transparency and visibility in your future projects.


Responsible persons:
DEDRA - Dedra-Exim Sp. z o. o. ul. 3 May St. 8, 05-800 Pruszków, Poland, sklep@dedra.pl (+48)22 738 39 89
Distributor for Slovenia: Haloorodje.si, Online Sales, Rok Groznik sp, Podturn 42, 8350 Dolenjske Toplice, info@haloorodje.si, +38669731944, Slovenia
Product origin: China

Instructions for using the product:
• Fill the tube with water and remove air bubbles.
• Place the ends of the pipes in the places you want to level.
• Wait for the water to settle.
• Check the height at both ends of the pipe and compare the water level.

Useful tips for work:
• Suitable for carrying height marks over longer distances.
• The pipe should be free of kinks during measurement.
• For accurate measurement, use clean water.
• Empty and dry the hose after use.

Warnings:
• Air bubbles can affect the accuracy of the measurement.
• Only use the hose if it is undamaged and free of leaks.
• When working at height, ensure safe use and attachment of the hose.

Same summary

The PRO 20 m pipe spirit level is suitable for users who perform major leveling on longer surfaces, such as installing fences, installing doors or building work on outdoor structures. Due to its length, it is less convenient for small interior tasks or repairs, where shorter models make more sense. It is important to check before choosing whether your projects are really of this length, as a long pipe spirit level can become less practical in smaller spaces. Despite its robustness, it may not be the best suited for very demanding, professional use, where even higher accuracy and additional features, such as a magnetic base, are crucial.

Recommendation source: Enaa guides and team experiences.

User view

A spirit level with a 20-meter hose is often useful for large domestic projects, such as digging in the yard, landscaping, laying foundations or installing exterior structures. It is usually used by users who have already encountered basic construction procedures or occasionally help with handyman tasks around the house. It is especially convenient in situations where leveling is required over a greater distance, as it allows for accurate level transfer between two distant points.

Dedra brand products are often recognized for their durability and focus on the practical needs of home craftsmen, which many users appreciate for occasional or more demanding tasks in the garden and around the house.

Why buy at Enaa

At Enaai, you have quick access to proven tools and accessories from the Spirit Levels category, making it easy to choose the right model for every project. Clear descriptions and reviews help consumers make more confident decisions with clear information.

Answers to frequently asked questions

What projects is a 20 m long pipe spirit level suitable for?

It is suitable for leveling and transferring height over larger distances, such as erecting fences, foundations, and various building structures outdoors or in larger spaces.

Is it also possible to use it indoors?

It is possible, but due to its length, a 20 m pipe spirit level is usually not the most convenient for smaller, indoor tasks - shorter models are more useful there.

Is there any special preparation or knowledge required to use this model?

For basic use, understanding the basics of leveling and ensuring that the tube is properly filled is sufficient. For greater accuracy, it is recommended to work on a clean and flat surface.

What is the advantage of a pipe level compared to a classic one?

The tubular spirit level allows the level to be transferred over obstacles or over longer distances, which in classic models is usually limited to the length of the tool itself.

Is the model also suitable for professional use?

It is useful for more demanding home and craft projects, but for professional and precise work, we recommend checking the required tolerances and additional functions according to specific needs.

Description updated: April 2026