1. A 3D recording device ( 1 ) comprising: an image-recording device ( 2 ), a rangefinder ( 3 ) and an image-processing device ( 4 ), the image-processing device ( 4 ) is configured to: identify ( 33 ) at least one group ( 29 , 30 , 31 , 32 ) of mutually corresponding image constituents ( 18 , 19 , 20 , 21 , 25 , 26 , 27 , 28 ) in a sequence ( 8 ) of at least two images ( 9 , 10 ) recorded by the image-recording device ( 2 ), calculate ( 38 ) at least one three-dimensional position specification ( 50 ) in relation to the at least one group ( 29 , 30 , 31 , 32 ) of the mutually corresponding image constituents ( 18 , 19 , 20 , 21 , 25 , 26 , 27 , 28 ) from a respective image position ( 59 , 60 ) of the image constituents ( 18 , 19 , 20 , 21 , 25 , 26 , 27 , 28 ) from the group ( 29 , 30 , 31 , 32 ) in the images ( 9 , 10 ) of the sequence ( 8 ), and scale ( 46 ) a calculated at least one three-dimensional position specification ( 50 ) using distance information ( 42 ) measured by the rangefinder ( 3 ).