MEASURING BLOCK FOR FIBRE WEB MACHINE

The present invention relates to a measuring block for a fibre web machine, wherein the measuring block (15) includes a support piece (16) and a fastening piece (17), which have been fastened to eachother in a pivoting manner by means of a joint (18), as well as sensor devices (19), which have been adapted between the support piece (16) and the fastening piece (17) on the measuring block (15) inorder to determine the tension of a fabric supported by a roll. There is a second support point (20) between the support piece (16) and the fastening piece (17), and the sensor devices (19) have beenadapted in connection with the second support point (20). In the measuring block, a sensor device being smaller than that in prior art can be applied; the measuring block is stable and can reduce shake when tension of a fabric is controlled; besides, because an overload protective device is built-in, the measuring block keeps a simple structure, and can be freely disposed in positions in differentgeometric shapes without in