Annotated pictures label components such as core and coil assembly, HV and LV bushings, OLTC cabinet, conservator, radiators, pressure relief devices, Buchholz relay, and oil level indicators. Such diagrams help students and technicians correlate physical parts with schematic symbols and understand the roles of each component. They also highlight maintenance points and safety devices that must be regularly inspected, making them useful for training and documentation in utility and industrial environments.