WRENCH WITH TORQUE INDICATOR

The present invention concerns a monolithic wrench (1) for indicating if an applied torque is within a predefined range, comprising: - a handle (30) formed in one single piece; - a head (20) for accommodating an element to tighten or loosen with said wrench; - an outer contour defining the maximal dimensions of the wrench; - a torque range indicator (10) accommodated in an inner opening entirely comprised within said outer contour, wherein said torque range indicator comprises an amplification mechanism (10A) for amplifying deformations of the head relative to the handle when the wrench is actuated, and comprises an indicating element (10B) on said amplification mechanism for indicating a range of torque based on a relative displacement of the head with respect to the handle. The present disclosure also concerns a use of the described monolithic wrench.