Position measurement method, position measurement systems and marking

A method for repeatedly measuring position of a construction device on a construction site wherein a position is measured relative to at least two markings, the method comprising

• a. directly measuring distances from a position measurement system arranged and/or formed on the construction device to the at least two of the markings located in a field of view of the position measurement system, and measuring the apparent viewing angles of the at least two markings from the position measurement system and carrying out a first measurement of the position of the construction device, wherein at least one position of the construction site is determined using mechanical contact of the construction device with a surface region of a construction element of the construction site, wherein a position of the surface region is determined;
• and
• b. taking a bearing of the at least two of the markings from the position measurement system and carrying out a second measurement of the position of the construction device, wherein the second measurement is performed at a higher repetition frequency than the first measurement.