Physical description

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)

Inscriptions & markings

In ink on lower left hand corner : “1”.