Patent ID: 11946782
Assignee: DR. JOHANNES HEIDENHAIN GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. The arrangement as recited in claim 13, wherein:
the two first scales each have a reflective measuring graduation in a form of a two-dimensional cross grating, which are disposed such that the two first scales are tilted about their respective directions of longitudinal extent with respect to the horizontal plane of movement, and
the at least one of the second scales has at least two reflective measuring graduations in two parallel tracks that extend parallel to the direction of longitudinal extent, the at least two reflective measuring graduations being configured as reflective linear gratings having graduation regions which are arranged periodically along the respective direction of longitudinal extent, and the grating planes of the reflective measuring graduations being oriented parallel to the horizontal plane of movement.