A measuring apparatus for alignment work of a vehicle body, the measuring device can be placed in connection with an alignment table (10), to whose fastenings (11a1, 11a2, 11a3, 11a4) can be mounted vehicle during the time period of the alignment work, and a measurement unit (17a1, 17a2) in which the measuring device (15) is movable in a vertical guide (15b1, 15b2), which vertical guide (15b1, 15b2) can move also in a longitudinal guide (15a1, 15a2), and whose displacement unit (17a1) can be provided with an arm movable measure (40), characterized in that the measurement arm (40) comprises a hinge (41) which is connected the first arm (42) so that the arm (42) pivotably on the support of the joint (41) with respect to the measurement arm (40), and wherein the arm (42) is connected to a second arm (43), which can be to rotate about its longitudinal axis (X30), to which a measuring head (65) of the second arm (43), either directly or through an intermediate part is connected.
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