Thermometer Closeup In Old Rusty Industrial Boiler Room Stock Photo - Download Image Now - iStock
American engineer and railroad journal . OBOSS SECTION D-D THBODQH ENGINE BOOH, SHOWING ABBANGEMBNT OF EXCITES IMTS, SWITOHBOABD QALLEBY ami TRANSFORMERVAULT IN BASEMENT—CROSS SECTION C-C THROUGH BOILER BOOM, SHOWING BLOW-OFI AND