006199
Photograph 006199 Second World War, 1939-1945OPTICAL MUNITIONS PANEL. MELB. UNIVERSITY. P.G. LAW (LEFT) AND J.B. WILLIS MEASURING RADII OF CURVATURE WITH A SPHEROMETER. (NEGATIVE BY E.L. CRANSTONE).

The Australian War Memorial Collection. Test site
MR. G.F. RICHARDSON (LEFT) AND K.L. DEAN MEASURING FOCAL LENGTH OF A LENS FOR AN OPTICAL INSTRUMENT. (NEGATIVE BY E.L. CRANSTONE).
OPTICAL MUNITIONS PANEL. MELB. UNIVERSITY. P.G. LAW (LEFT) AND J.B. WILLIS MEASURING RADII OF CURVATURE WITH A SPHEROMETER. (NEGATIVE BY E.L. CRANSTONE).

OPTICAL MUNITIONS PANEL - MELB. UNIVERSITY. DR. W. KANNULUIK WITH A PULFRICH REFRACTOMETER USED FOR MEASURING THE REFRACTIVE INDICES OF OPTICAL GEAR. (NEGATIVE BY E.L. CRANSTONE).

ALL OPTICAL PRODUCTS ARE SUBJECTED TO RIGOROUS TESTS. MR. R.L. ABBEY USES A SPECTROMETER TO TEST A PRISM. (NEGATIVE BY E.L. CRANSTONE).

THE FINISHED OPTICAL GLASS. (NEGATIVE BY E.L. CRANSTONE).

THE TEMPERATURE, WHICH IS AS HIGH AS 1400 DEGREES CENTIGRADE, IS MEASURED CONTINUOUSLY WITH AN OPTICAL PYROMETER. THE PROCESS TAKES APPROX. 12 HOURS AND CORRECT TEMPERATURE MUST BE MAINTAINED THROUGHO

OPTICAL MUNITIONS PANEL. MELB. UNIVERSITY. DR. W. KAHANE CHIEF DRAUGHTSMAN ENGAGED ON OPTICAL MUNITIONS. NEGATIVE BY E.L. CRANSTONE).
