An apparatus for mounting an X-ray device or other electronic device, or a PAN disrupter or other mechanical device onto a ladder, the apparatus broadly comprising a horizontally extending mounting plate, a horizontally extending engagement bracket, a vertically extending mounting plate, and a hinge. The horizontally extending mounting bracket and the horizontally extending engagement bracket each include a rung engagement tab. The horizontally extending engagement bracket is slidable in relation to the horizontally extending mounting bracket for securing the apparatus to a ladder rung via the rung engagement tabs. The horizontally extending mounting plate stabilizes the electronic or mechanical device via the ladder rung and the vertically extending mounting plate supports the weight of the electronic or mechanical device on a lower ladder rung. The hinge pivotably connects the horizontally extending mounting plate and the vertically extending mounting plate.