'Bactil' research microscope
'Bactil' research microscope, steel and brass, by W. Watson and Sons Ltd., 313 High Holborn, London, England, 1948.
'Bactil' research microscope, steel and brass, with some accessories, in mahogany case, by W. Watson and Sons Ltd., 313 High Holborn, London, England, 1948.
'Bactil' research microscope, steel and brass, by W. Watson and Sons Ltd., 313 High Holborn, London, England, 1948.
Mahogany case containing accessories for 'Bactil' research microscope, by W. Watson and Sons Ltd., 313 High Holborn, London, England, 1948.