In apartments, in which there are small children, you should pay attention to their safety related to the gas stove. In many types of cookers, Even very young children can turn the knob, thus turning on the gas flow. Protection against this can be a wooden tray slid over a series of knobs. Before its removal, it is secured by two pins made of nails, inserted into the tray under the knobs. The pins should be installed like this, so that the nail heads retract into the chamfers on the top surface.