Used at BIAE in petrology laboratoryAn optical, petrographic, polarizing microscope with a single objective lens in a blonde timber case with key. Black enamel frame, chrome accessories.POS marking on steel plate Olympus Tokyo 202108 engraved on barrel On Box door "P6" engraved labelmicroscope, polarizing microscope, olympus optical co. ltd, ballarat institute of advanced education, petrology laboratory, scientific instrument