Photograph

Maker: Cranstone, Edward Lefevre (Ted)

MT. STROMLO, MAKING OF LENSES FOR MILITARY INSTRUMENTS: AFTER FINAL POLISHING LENS IS TESTED WITH SODIUM MONOCHROMATIC LIGHT. THE LENSES MUST CONFORM TO AN ACCURACY OF ONE TWO MILLIONTH OF AN INCH OVE...

005926

Photograph

Maker: Cranstone, Edward Lefevre (Ted)

MT. STROMLO, MAKING OF LENSES FOR MILITARY INSTRUMENTS: COMPLETED LENS IS FITTED TO PARTICULAR GUN SIGHT. MR. H. BANHAM - SENIOR MECHANIC ON THE PERMANENT OBSERVATORY STAFF FITS THE LENS TO A MILITARY...

005916

Photograph

Maker: Cranstone, Edward Lefevre (Ted)

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...

005921

Photograph

Maker: Cranstone, Edward Lefevre (Ted)

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).

005920

Photograph

Maker: Cranstone, Edward Lefevre (Ted)

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...

005925

Photograph

Maker: Cranstone, Edward Lefevre (Ted)

MT. STROMLO, MAKING OF LENSES FOR MILITARY INSTRUMENTS: LENS ARE MOUNTED ON SPHERICAL BLOCK WITH PITCH AND THEN GROUND & POLISHED ON THIS REVOLVING WHEEL. A REFUGEE FROM ENEMY OCCUPIED COUNTRY IS ENGA...

005923

Photograph

Maker: Cranstone, Edward Lefevre (Ted)

MT. STROMLO, MAKING OF LENSES FOR MILITARY INSTRUMENTS: MR. ELWYN ENGAGED IN MAKING A GAUGE DESCRIBED IN 5926. (NEGATIVE BY E. CRANSTONE).

005924

Photograph

Maker: Cranstone, Edward Lefevre (Ted)

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).

005919

Photograph

Maker: Cranstone, Edward Lefevre (Ted)

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 OPTI...

005917

Photograph

Maker: Cranstone, Edward Lefevre (Ted)

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...

005918

Photograph

Maker: Cranstone, Edward Lefevre (Ted)

MT. STROMLO, MAKING OF LENSES FOR MILITARY INSTRUMENTS: SPHERICAL IRON BLOCKS ARE CAREFULLY TURNED TO EXACT MEASUREMENTS FOR USE IN MOUNTING LENS BLANKS FOR GRINDING. TED HOLMES OF OBSERVATORY STAFF A...

005927

Photograph

Maker: Cranstone, Edward Lefevre (Ted)

MT STROMLO - OPTICAL MUNITIONS PANEL MEETING AT CANBERRA. (NEGATIVE BY E. CRANSTONE).

005922