The Australian War Memorial Collection. Test site
THE RESULTS OF THE TESTS ARE ANALYSED. PROFESSOR HARTUNG DISCUSSES THE GLASS WITH MR. AMPT BEFORE HIS ANALYSIS. (NEGATIVE BY E.L. CRANSTONE).
MOST INSTRUMENTS CONTAIN GRATICULES. THESE ARE OPTICAL GLASS DISCS ETCHED WITH A SCALE. PROFESSOR AGAR, PROFESSOR OF ZOOLOGY USES A PANTOGRAPH DESIGNED AT THE NATURAL PHILOSOPHY LABORATORY FOR THE PRO
ALL OPTICAL PRODUCTS ARE SUBJECTED TO RIGOROUS TESTS. MR. R.L. ABBEY USES A SPECTROMETER TO TEST A PRISM. (NEGATIVE BY E.L. CRANSTONE).
PROFESSOR LABY - PROFESSOR OF NATURAL PHILOSOPHY AND CHAIRMAN OF THE OPTICAL MUNITIONS PANEL, IS HERE EXAMINING A MILITARY DIRECTOR. (NEGATIVE BY E.L. CRANSTONE).
PROFESSOR LABY - PROFESSOR OF NATURAL PHILOSOPHY AND CHAIRMAN OF THE OPTICAL MUNITIONS PANEL, IS HERE EXAMINING A MILITARY DIRECTOR. (NEGATIVE BY E.L. CRANSTONE).
GLASS SQUARES MUST FIRST BE MADE SCRUPULOUSLY CLEAN IN CHEMICAL BATHS. MR. A.G. GOODWIN (RIGHT) AND HIS ASSISTANT PETER LAW PERFORM THIS OPERATION IN THEIR LABORATORY. (NEGATIVE BY E.L. CRANSTONE).
THE SQUARES ARE MADE INTO PILES AND WIRED TOGETHER WITH THIN COPPER WIRE. MR. J.C. NIVEN. (NEGATIVE BY E.L. CRANSTONE).
