Abstract: A device usable in firearm practice comprises an upright target member with a front surface having selected heat-emitting areas which simulate the thermal signature of a military object. That surface is covered in one instance by two interleaved arrays of conductor strips bridged by short patches of resistance material which act as localized heat generators upon being energized with direct current. In another embodiment the heat-emitting areas are reflectors irradiated by infrared lamps that are disposed in front of the target member below a firing line.

Abstract: A target device for ascertaining the proximity of a hit to the target center comprises a plurality of transducers separated from one another in a space behind the target surface and positioned to respond to the impact shock at times determined by the sound propagation velocity in the air of this compartment. To increase the accuracy of the device, means is provided to provide an essentially constant temperature gradient (or uniform temperature) in the space or compartment and/or one sensor more than that required for determining the position of impact when the sound propagation velocity is known, is used.