NPWHF0733 a,b - Surgeon's Binocular Magnifying Lenses
a) Box, cylindrical cardboard covered in leather with a flap hinged lid at one end with tuck in of flap closure. Makers name and address on inside of flap lid.
b) Magnifying lenses consisting of conventional spectacle frames (style) mounting two circular magnifying lenses. focused slightly inwards to provide a focal length of about 300 mm. Frames are chrome steel with ear peices coated with plastic, lenses are glass. Magnification is about 5X at 300 mm focal length.
Object ID: NPWHF0733 a,b - Surgeon's Binocular Magnifying Lenses
Materials: leather covered cardboard, glass, chrome steel
Dimensions: a) 150 mm L 50 mm D b) Lenses 30 mm D 20 mm deep. spectacles part earpiece 11 cm L, W 9 cm
Maker: Theodore Hamblin Ltd.