C. Reichert - Vienna - Microscope
Reichert 'HEIMDAL' Microscope. Lacquered brass with black enameled iron horseshoe base in mahogany case with accessories.Matr. 60019. Monocular. Main focus by rack and pinion and fine focus by thumbwheel micrometer. Circular rotating stage. Made around 1930. Abbe optical condenser, Interchangeable objectives. Height 36 cm.
A similar instrument can be found in an article by D.B. Payne, 'The Reichert 'Heimdal' Field Microscope after F.K. Reinsch'. In Microscopy 1977, vol. 33, part 4, pp.201-206.