A target device for firing practice. At least one thermal target surface is heated by an electrically current passing through same. The thermal target surface includes a number of current coils arranged so as to conduct the current from a first area of the target surface to a second area. Each current coil includes current conductors disposed essentially in parallel with one another at a first distance from one another. The current conductors are connected to one another at their ends so that they form the current coil from the first area to the second area. Proximate current coils are mutually connected via bridges.