This Architectural Drawing ios AutoCAD 2d drawing of Gas stove and OTG cad blocks in AutoCAD, dwg file. An Oven, Toaster, Grill (OTG) is essentially a smaller version of a traditional oven. It uses heated coils to cook meals and requires much less setting up. The thermostat present in the OTGs helps control the temperature, ensuring the food is cooked or heated properly.