# Oak scales

Again and again, the most different people ask the question of whether they can calibrate their personal scale. Whether this is necessary at all and how you must proceed when calibrating the personal scale, we have summarized below for you.

### Determine if the bathroom scale weighs correctly

Like any other scale, the weight is determined with the personal scale. However, as you know for sure, there are big deviations especially for personal scales. Therefore, from different households and work areas, the question arises again and again, where can a bathroom scale be calibrated?

### Various setting options on the scale

However, the question should first be asked whether a balance calibration for the personal scale is even necessary. For this, it is important to first compare the different types of "attitude":

• the adjustment of a balance
• calibrating a balance
• the oak of a libra

Adjustment is possible with just about every body scale in the bathroom (or where you set it up). However, the adjustment does not take into account the measuring accuracy of the balance. Rather, the measuring range is adjusted. An example: You stand 5 meters next to the scale or you look directly from above on the scale of the scale. You will notice that the measurement point (arrow, line in the sight glass above the scale) does not lie directly above the zero mark, depending on the view.

But not only the perspective is crucial. Also, temperature (thermal expansion), altitude above sea level (NN), or frequent or less frequent use of the balance may cause it to be misaligned. Then you can use a thumbwheel to set either the glass, but usually the movable scale so that the zero line is directly above the measuring point. You will notice that the match already deviates, if they look very slightly from another angle on the scale.

### Calibrating the bathroom scale

However, adjusting just just the match between the displayed weight and the marked measuring point. The adjustment says nothing about the accuracy of the personal scale. If you do not trust your balance, or you want to make sure that the measurement is accurate before you buy, you can simply calibrate. All you need is a counterweight with a fixed unit of measurement. Even better would be different weights, possibly even up to a weight between 20 and 50 kg.

This is how you can determine whether the balance is working exactly in all areas. For this purpose, the balance is first adjusted and then the weights are placed on the scale. Modern electronic scales can also be calibrated via a control button. Then the scale measures the weight and sets it to zero. Incidentally, calibration is also used elsewhere. For example, when calibrating copper pipes.

### The oak of the bathroom scales

The oak is ultimately nothing more than the calibration, but now officially. Therefore, the calibration of a balance is done at a relatively high cost. The balance then gets a seal of approval, which is valid for a limited time.

A conventional bathroom scale, as most people have at home, does not have to be calibrated. However, there are areas where a calibrated scale can be essential and also required by law. These include, in particular, medical personal scales in medical practices or hospitals.

If you want to calibrate such a balance, you can not do it yourself. Rather, you have to do this in the next calibration office. In addition, there are especially officially certified companies that have a calibration certificate, so may calibrate balances if necessary.

### Tips & Tricks

In our everyday life we ​​encounter numerous facilities that must be calibrated. For example, dispensers at petrol stations must be calibrated regularly, or even older tachographs (tachographs that record) in truck scales.