Kipp-Tester tests the stability of a tombstone |

Frequently Asked Questions About Kipp-Tester.

Selected answers here.

Testing the stability of gravestones is about the safety, health and protection of life and limb of visitors and workers in cemeteries – they should be protected from the dangers of falling or unstable gravestones, which often weigh several hundred kilograms and are painful can cause injury. As a result of frost, subsidence or unnoticed touching of a tomb, its stability can be so limited that it poses a real danger to people and animals staying nearby. With , this danger is recognized early and cemetery operators prevent worse things from happening by means of warnings, barriers, securing or controlled relocation. That means: protects visitors and workers in the cemetery from the risk of accidents. As a result, those who are entitled to use grave sites and cemetery operators ward off liability for damages and recourse, as well as claims by injured parties for compensation for pain and suffering or pension payments.

Check out our products

We are proud of it and, after the experiences with the blackout, attach great importance to the fact that is and remains “made in Germany” as far as possible; That means: The contains almost exclusively parts and components manufactured in Germany. This was the only way to comply with the basic delivery time of max. 2 weeks for calibrations in 2021 and 2022. Apart from a few bottlenecks at our German suppliers, new devices were generally with the customer within two weeks of the order being placed. In addition, “made in Germany” enables us to maintain the consistently high quality standard of DIN EN ISO 9001

Check out our products

In order for the stability test to be carried out properly, the tomb must withstand the test force of 500 N(ewton) during the initial test (i.e. after the first erection or after reconstruction) – this test is usually carried out by the stonemason. During routine tests, the top edge of the gravestone is subjected to a test force of 300 Newtons – if it withstands this, it is considered stable and roadworthy. So that the test is “watertight”, i.e. legally secure and, in case of doubt, court-proof, it is carried out with a Kipp-Tester  that is calibrated to the respective test force and has a valid test seal.


Check out our products

Because there are two relevant test forces for stability in Germany and others in other countries, the required test force can be set and calibrated by us as the manufacturer. Users cannot manually adjust the test force themselves, as this would invalidate the calibration and the tests would be legally irrelevant.

Check out our products

The quality management standard DIN EN ISO 9001 prescribes a test equipment management including regular inspection of the test equipment.

A so-called ISO calibration (also called factory calibration) must be carried out for, which includes

• References traceable to national or international standards. These are calibrated annually.
• A detailed description of the measurement method and, if applicable, the standard/directive used.
• A warm-up time of at least 4 hours in the calibration laboratory.
• The environmental conditions are documented.
• Checking of the measurement results using the dual control principle.
• Evaluation of the measured values ​​with the specified manufacturer tolerances.

The ISO calibrations in the calibration laboratory thus meet the requirements of DIN EN ISO 9001.

Check out our products

There is no clear legal requirement for this; It is comparable with winter tyres: in Germany there is no general obligation to have winter tyres; However, if you drive with summer tires in the cold season, you should take restrictions (e.g. insurance cover) into account.

Cemetery administrations carry out stability tests on gravestones after the frost period in order to fulfill their duty of care and to protect themselves against any claims resulting from gravestones that are not stable.

However, the effort only makes sense if the tests have been carried out correctly and this also includes a correctly set test device and a valid test seal.

Check out our products

Calibration is most comparable to verification. However, calibrations may only be carried out by authorities, the calibration offices.

During calibration, the test device – in the case of  Kipp-Tester  the spring-based force gauge – is clamped within the specified tolerance of a new device. In this context, we clean every device and carry out a comprehensive functional test. Only then is provided with a test seal and a test certificate created, which is handed over to the owner together with the calibrated device.

With our calibrations, there is no permanent intervention in the measuring device, rather the  is calibrated back to the original new device status

Check out our products

In fact, we can sometimes (rarely) offer used after inspection, replacement of all wearing parts and with fresh calibration.

However, since Kipp-Tester are serviced and, if necessary, repaired with each calibration, users usually have no reason to part with their Kipp-Tester.

If you want a used Kipp-Tester, you should not be under any time pressure and it is best to make a note of it with us so that we can inform you in good time if a used Kipp-Tester is announced or in prospect.

Check out our products

Kipp-Tester has proven itself for a long time when it comes to testing the stability of gravestones, is the market leader and a kind of “reference device”; Compare the pace of paper handkerchiefs. From time to time it happens that people want to send us devices from other manufacturers that are no longer on the market for calibration – which we politely decline if the device does not come from us. has been around for over 30 years and we still maintain, calibrate and repair devices from the very beginning. So far, all components and modules are in stock and quality has its price.

Check out our products

Unreservedly YES – in over 30 years we have not repaired a single piece of equipment because it was run over by a heavy construction machine and the damage was so severe that all parts actually had to be replaced and any repair costs would have been greater than the cost of one new kipp-TesterBecause are thoroughly serviced and subjected to a comprehensive function test as part of each calibration, we identify wearing parts in good time and replace them before anything else happens – repairs in the actual sense are therefore rather rare. So something out of the ordinary has to happen for a repair to be necessary: after a fall, for example, the glass of the gauge may have cracked and should be replaced, or the device got very wet and caused a short circuit.

Check out our products

The tests of the stability of tombs usually take place in the spring after the frost period, which in turn means that the Kipp-Tester spends the rest of the time in a kind of slumber.
The ideal protection for this is our transport and storage case, in which the Kipp-Tester rests between foam pads in a stable plastic casing.
Ideally, the case should lie flat when not in use for a long period of time so that it cannot fall over and the central spring in the Kipp-Tester is not permanently “under tension”.
It is strongly discouraged to let the testing device “hibernate” standing on the pressure plate (possibly without further protection), so that it is also exposed to strong temperature fluctuations.
Ideally, the case with the Kipp-Tester in it has a permanent “berth” in a heated room. This minimizes the likelihood of repairs beyond normal maintenance and calibration before the next test run.

Check out our products

This question is always asked by gravesite users and insurance companies when a gravestone has been diagnosed as unstable or when a mishap has occurred.
In contrast to purely manual testing methods (by pressure and tension, so-called “shaking test”), it can be assumed in the case of stability tests with the Kipp-Tester that the correct test force (in Germany currently 300 Newton at the top edge of the gravestone) was used.
However, the Kipp-Tester should have a valid calibration when the test is carried out because otherwise testers are in a similar predicament to driving in winter weather with summer tyres and being involved in an accident through no fault of their own despite sufficient distance ….
So if gravesite users or insurance companies doubt the correctness of a test with the justification that the test device did not have a valid calibration at the time of the test, an out-of-court, amicable settlement should be sought, in which presumably both sides “let off steam”.
Even if later calibration shows that the Kipp-Tester is within the tolerance range, this has no retroactive effect on earlier tests without valid calibration.
To be on the safe side, all parties involved should always recalibrate all Kipp-Tester before the test run in early summer of each year – then doubts are eliminated.

Check out our products

Preliminary: The following text is not legal advice and does not intend to replace such advice. Rather, it attempts to dispel ignorance, uncertainty, and doubt about the subject of “stability testing of tombstones” and ultimately to avoid injustice and prevent disputes.

So if your tombstone has been identified as loose or wobbly . . .

. . . a warning sticker is on the tombstone, the grave is cordoned off, or the monument has been laid down, the grave site usage rights holders must take action. First, try to be aware that a tombstone identified as loose may be annoying, but it is far less serious than if someone had been injured by the falling tombstone . . . Nevertheless, in this case, it’s also about money, as sometimes the re-erection of a tombstone is even more expensive than the new tombstone was initially. If you, as the grave site usage rights holder, have doubts about the correctness of the stability test, contact the cemetery administration and ask for clarification; if in doubt, have the test protocol shown to you: If the test was carried out and recorded by two testers, everything seems to be in order, and the question remains about the testing procedure.

  • Was the test performed manually (i.e., without a testing device) using the pull-push method (so-called shaking test)? With what certainty can the prescribed (maximum) force of 300 N(ewtons) – and definitely no more – be proven?


  • If the test was performed manually with a force-testing device with 300 N(ewtons), everything seems to be correct at first glance; If the testing device had a valid calibration at the time of the test, the cemetery administration did everything right, and your tombstone was rightly identified as a “wobbly candidate.” Be glad that the danger was recognized before something worse happened.


  • If the testing device did not have a valid calibration at the time of the test, it might be difficult for the cemetery operator to prove the 100% correctness of the test . . .


As written above, this text aims to familiarize you with the procedure of tombstone stability testing. If you have doubts about the correctness of the test, perform an initial check here; if doubts remain, consider seeking legal advice.


Check out our products

When the tombstone is no longer secure.

This is not as rare as you might think: Weather affects tombstones, digging, leveling, or compacting is carried out on most cemeteries, metal anchors, brackets, dowels, and the like rust, joints crumble, adhesives come loose, and the occasional tombstone may be inadvertently touched by a machine, causing it to loosen . . .

Once it is clearly established that you, as the grave site usage rights holder, are responsible for eliminating the danger posed by the loose or wobbly tombstone, you should keep a cool head and aim for the right solution for you:

  • Is someone else (a third party) to blame, or is there perhaps still a warranty or guarantee for the tombstone, or could you possibly persuade the installer to reach an agreement on goodwill?


  • Is it a tombstone that should remain on the grave for a long time? For example: Because it is a family grave that will be used in the long term or


  • Will the grave in question be dissolved in the foreseeable future, and the tombstone would have to be removed anyway? Is there a cheaper alternative for the “remaining term”?


Discuss the scenarios within the family and seek advice from professionals (stonemasons, stone sculptors, etc.) as laypeople – and always from several. On the one hand, competition is known to stimulate business, and on the other hand, professional B might have better ideas than professional A with a traditionally crafted proposal, and company C may be able to offer a cost-effective alternative.

Compare the offers calmly and create as much planning certainty as possible (preferably at a fixed price) to be protected from unpleasant surprises. In any case, it must be ensured in the end that your grave site is in impeccable condition again and that no danger emanates from your tombstone. Perhaps you can even agree on a warranty period with the installer, during which they will be liable if the tombstone is identified as a wobbly candidate within the deadline . . .

Check out our products