Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of Peter Law and A.C. Goodwin examining optical glass specimens.In ink on lower left hand corner : “28”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of J.F.G. Darby (Left) & W.B. Lasich (Right) sighting on apparatus(??).In ink on lower left hand corner : “11”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of Professor Hartung trmoving experimental pot of optical glass from furnace.In ink on lower left hand corner : “36”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of P.G. Law & J.B. Willis operating optical dial gauge comparator.In ink on lower left hand corner : “31A”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo shows Eric Burhop operating an optical pyrometer ....with possibly a vacuum furnace?In ink on lower left hand corner : “22”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of Bob Caldwell cutting through glass “sandwich” using a diamond saw.In ink on lower left hand corner : “26”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo showing Gordon Crickmore using compass on drawing board. Same photo as 267In ink on lower left hand corner : “16”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of “Peter Law (Left) & A.C. Goodwin (Right)”. Involved with optical flats in aluminising apparatus.In ink on lower left hand corner : “9”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of “Peter Law (Left) & A.C. Goodwin (Right)”. Involved with optical flats in aluminising apparatus.In ink on lower left hand corner : “8”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of Geo Armitage testing a monocular (or part of the binocular testing program?). Same apparatus as in no 134. In ink on lower left hand corner : “7”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of J.L. Richardson and -- Dean using an optical bench to test a lens. Lab books are also visible.In ink on lower left hand corner : “30”.

Stapled thin leaflet cover entitled “Natural Philosophy Laboratory University of Melbourne. Inspection of New Wing and Exhibition of Physical Apparatus and Experiments. Friday, August 25th, 1939 8pm to 10pm”. 15 pages in leaflet.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of W.G. Kannaluik operating an Abbe refractometer.. (For 122.2 see record no 273: ditto as for 122.1 ... photo of TH Laby) In ink on lower left hand corner : “1”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of T.H. Laby holding a gun sight. Catalogued out of order as 122.2 (Photograph temporarily mislaid and repllaced by a P/C)

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of Gus. Ampt and Professor Hartung examining experimental pots of optical glass; the pots have been halved in order to make the examination..In ink on lower left hand corner : “37”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of H.A. Waters operating instrument on tripod. Two rotary switches marked “Graticule”, switch positions “Off On”; similarly “Vernier” -- “Off On”.In ink on lower left hand corner : “32”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo showing telescopic view of landscape through ocular of a dial sight. Image is coincident with graticule with horizontal and vertical scales. (see worksheet for diagram).In ink on lower left hand corner : “35”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of hands operating glass cutter, producing rectangular strips in preparation for experimental fusing of glass “sandwiches” into optical blocks. Same photo as 265In ink on lower left hand corner : “24”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo showing four assorted optical prisms on a black background. A fifth specimen shows a sandwich glass “prism” assembly prior to cutting and polishing. In ink on lower left hand corner : “25”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of R.D. Hill and H.A. Waters assembing/operating dial sight (same equipment as held by T.H. Laby in no 122.3/273 in Vol. 1/2)In ink on lower left hand corner : “34”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo showing close up of glass optical flat in case. Photographed label reads: “Glass optical flat. Made by Natural Philosophy Laboratory. Melbourne University. Certificate Number 18. Accuracy of surface, flat within .000,001 (unmarked surface). Accuracy of surface, within .000,002 inch (marked) “use other side”. A photograh in Cd red light of the interference fringes of this flat when placed on a standard glass flat is shown above. Initials: [signature]. Tests made by: [VDH signature]. Certificate issued by T.H.L. Date: Feb 19th 1941.In ink on lower left hand corner : “17”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of E.R.Johnson testing fused sandwiched plate glass in a polarimeter. N.B. As at time of writing it is not certain that the “man” pictured in nos. 147 and 149 is the same individual as pictured in no 140. (EGM. 11/11/99)On back of photo in pencil: “No. 20 E.R. Johnson”

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of E.R.Johnson testing fused sandwiched plate glass in a polarimeter. N.B. As at time of writing it is not certain that the “man” pictured in nos. 147 and 149 is the same individual as pictured in no 140. (EGM. 11/11/99)In ink on lower left hand corner : “20”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of man, possibly E. R. Johnson, examining rectangular glass “sandwich” block in light. N.B. As at time of writing it is not certain that the “man” pictured in nos. 147 and 149 is the same individual as pictured in no 140. (EGM. 11/11/99)In ink on lower left hand corner : “29”.

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of man, possibly Eric Johnson, assembling glass “sandwich” prior to fusing. N.B. As at time of writing it is not certain that the “man” pictured in nos. 147 and 149 is the same individual as pictured in no 140. (EGM. 11/11/99) Same photo as Reg No. 268In ink on lower left hand corner : “27”.

Part of a series of optical munition snapshots 1940-1947. Refer to Cat No 137 for full details. Black and white photo of optical flat in de luxe case with certificate: “GLASS OPTICAL FLAT, made by Natural Philosophy Laboratory, Melbourne University” Number 18. Accuracy of surface flat within .000,001 inch .... Issued by (signd) T.H.L. Feb 19, 1941. Duplicate copy of Cat no 137; in OMP Album Vol 1 #17.In ink on lower left hand corner : “17”. Inscribed on back in pencil: “No. 17”

Part of a series entitled “Optical Munitions - School of Natural Philosophy, 1942-1945”. Black and white photo of Optical Munitions Panel meeting (September 1943) of 11 members: L to R: Lt. Col. G.H. Adams; G.H. Briggs; Mr (Sr) Richard v.d.R. Woolly; E.O. Hercus; H.J. Frost; Prof. Kerr Grant (S.A.); Prof. T.H. Laby; Harrigan; J.S. Rogers; Prof. A.D. Ross (W.A.); Prof. T. McAuley (Tas)In ink on lower left hand corner : “23”

Vernon Harcourt’s Standard Pentane Lamp, consisting of the following components: 27.1: Wooden hinged box with key 27.2: Glass Pentane lamp 27.3: Metal clamp attachment 27.4: Empty glass bottle 27.5: Glass bottle stopper 27.6: 1.5 CP weight 27.7: 1 CP weight 27.8: Small metal bullet 27.9: Instruction sheet Miscellaneous: 2 screws to be reattached to lamp green small piece of glass small flat rectangular piece of metal cotton woolLabel on front of box (27.1): “1K5”; “Natural Philosophy Laboratory No. University of Melbourne” Label on inside of box (27.1) “Negretti and Zambra Opticians Meteorological Instrument Makers to the Queen To the Prince of Wales The Royal Observatory Greenwich The British Meteorological Society Admiralty, Board of Trust, Royal National Lifeboat Institution. Holborn Viaduct. 45 Cornhill. 122 Regent Street & Crystal Palace London” (emblem also included on label). Plaque on lamp (27.2): “Nat. Phil. Lab No. Univ. of Melb.”; “Vernon Harcourt Standard Pentane Lamp No. 2. Made by Woodhouse & Rawson Electrical Manfg Coy No. 4590” Label on clamp (27.3): “Nat Phil. Lab. N. Univ. of Melb” Moulded on glass bottle (27.4): “4 oz” Inscribed on weight (27.6): “1.5CP” Inscribed on weight (27.7): “1 CP”