The Australian War Memorial Collection. Test site
MT. STROMLO, MAKING OF LENSES FOR MILITARY INSTRUMENTS: OWING TO DIFFICULTY IN OBTAINING SUFFICIENT OPTICAL GLASS HERE, SILVERED PLANES ARE USED INSTEAD OF USUAL PRISM - JACK CRISP HERE GRINDS AN OPTICAL FLAT TO BE USED FOR THIS PURPOSE. (NEGATIVE BY E. CRANSTONE).
MT. STROMLO, MAKING OF LENSES FOR MILITARY INSTRUMENTS: EXPERIMENTAL WORK IS ALSO BEING CARRIED OUT WITH PRISMS, ANTICIPATING PRODUCTION OF OPTICAL GLASS IN AUST, A PROJECT WHICH IS WELL ON ITS WAY. H
MT. STROMLO, MAKING OF LENSES FOR MILITARY INSTRUMENTS: SELECTING A GLASS FROM SUPPLY OF SPECTACLE GLASS - THE ONLY OPTICAL GLASS OBTAINABLE HERE. MR. E.J. ELWYN LATE LECTURER OF MANUAL ARTS AT SYD. U
MT. STROMLO, MAKING OF LENSES FOR MILITARY INSTRUMENTS: NEW OPTICAL SYSTEMS ARE CONTINUALLY BEING DEVISED. HERE IS DR. WOLLEY AND MR. BANHAM DISCUSSING A NEW PROJECT. (NEGATIVE BY E. CRANSTONE).
MT. STROMLO, MAKING OF LENSES FOR MILITARY INSTRUMENTS: MR. ELWYN ENGAGED IN MAKING A GAUGE DESCRIBED IN 5926. (NEGATIVE BY E. CRANSTONE).
MT. STROMLO, MAKING OF LENSES FOR MILITARY INSTRUMENTS: DR. ALLEN CUTTING THE LENS BLANK FROM THE GLASS WITH A BRASS CUTTER WHICH ALTHOUGH COMPARATIVELY SOFT IS USED TO CUT THE GLASS WHICH IS ONE OF T
MT. STROMLO, MAKING OF LENSES FOR MILITARY INSTRUMENTS: DR. WOOLLEY, DIRECTOR OF THE COMMONWEALTH SOLAR OBSERVATORY TAKING A SIGHT THROUGH COMPLETED INSTRUMENT. (NEGATIVE BY E. CRANSTONE).
