Technological achievements of recent decades have become an integral part of everyday life. However, conventional methods are still widely used in some areas. This could result in a more time-consuming and complex process than necessary. The same applies to documenting indoor infrastructure. The laid infrastructure is still largely measured using conventional methods such as tape measures or folding rules. This information is then entered into a construction plan and digitised in an additional step. Augmented reality glasses could make this process easier, saving a considerable amount of time and effort. This method enables cables to be digitally recorded and imported into the existingconstruction plan in the correct position. This master's thesis aims to compare the measurement of line lengths using these two methods. The examination will cover measurement speed, accuracy and cognitive load. Therefore, a study involving 42 participants was designed and conducted. The augmented reality glasses used were Microsoft HoloLens 2. All participants completed six tasks using the glasses and a conventional measuring device, whereby the participants could choose between a tape measure and a folding rule. The length measurements were distributed across four different surfaces. The results of the study show that the difference in accuracy between the two measuring devices can vary greatly depending on the surface being measured. For vertical surfaces, for example, the difference is around 0.3 centimetres. For horizontal measurements, the viewing angle is crucial. If the view must be directed downwards during measurement, the difference in accuracy remains small at 0.5 centimetres. However, if the head is tilted upwards, the average deviation increases to 3 centimetres.Augmented reality glasses offer a clear advantage in terms of measurement speed over long distances or on ceilings. An improvement of two minutes was observed. However, the conventional method is 43 seconds faster for measurements taken on the floor over shorter distances. There is no significant difference when measuring shorter distances on a vertical surface. The participants perceived the cognitive load as equal when measuring short distances. For long distances, they perceived measuring by hand as significantly more challenging than using the HoloLens 2. The use of augmented reality glasses as a surveying instrument offers a number of technical advantages. However, the field of application and the desired accuracy should always be taken into account. Nevertheless, there is a major advantage when measuring both long and difficult-to-access infrastructure. Augmented reality glasses could be used outdoors or for larger building surveys, as these usually involve covering long distances.