Browse Items (3473 total)

Farnell BINARY modules in ABDNP:201911a

wooden frame with 2 parallel lenses of different sizes.

Royal typewriter, in black bakelite and metal casing with glass sidepanels, with original ribbon

a hand blown cylindrical glass laboratory jar with rimmed top and base.

Small cylindrical box of 4 tiny mirrors individually wrapped in tissue paper. Hand written on box.

Pointolight light bulb with power supply in projector casing. 3 step start up operation, instructions on starter. Plate has makers name and location on it.

glass hydrometer, scale 0-100, mercury weighted bottom bulb, brine percent

a glass mercury specific gravity hydrometer with paper scale insert 0.700 to 0.800 for light liquids. The bulb is separated from the float by a short length. In cardboard cylinder

Wooden hinged box with metal handle. Card inside reads "Original box for 'lefebore's level". Empty. Storage for optical instrument