A measuring head (4) for use in tobacco industry, the measuring head (4) comprising at least two neighboring sensor units (8-8′, 9-9′, 10-10′, 11-11′) enabling to take measurements of the parameters of rod-like elements, in particular rod sections and/or an endless rod, travelling within the measuring head (4), by means of radiation emitted and received by the sensor units (8-8′, 9-9′, 10-10′, 11-11′), the measuring head (4) comprising a protective member (13) for the rod-like elements extending through the operation zones (8A, 9A, 10A, 11A) of the specific sensor units (8-8′, 9-9′, 10-10′, 11-11′), characterized in that compartments (14, 15, 16, 17) are defined in the protective member (13), each compartment corresponding to the operation zone (8A, 9A, 10A, 11A) of one sensor unit (8-8′, 9-9′, 10-10′, 11-11′) and each compartment (14, 15, 16, 17) comprising at least one first opening (8B, 9B, 10B, 11B) enabling percolation of said radiation.