Browse Items (3473 total)

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

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

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

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

in wood, small trestle table or stool with crossed supports at each end, brass screws, possibly for equipment support

Small wooden drawer of miscellaneous items including brass tweezers, rotating aperture selector, eyepiece, a lens and screws. Drawer has an ivory handle and used to hold slides or lenses as grooves set in wood.

wooden stool with 4 wooden feet

a cylindrical spirit level with square hook at each end possibly for attachment to a horizontal line

tall cylindrical glass laboratory jar with rimmed top and base. Dried orange rubber around rim

six ivory balls, one wooden ball, some have a green cord attached for suspension. One of the larger ivory balls has a flush weight attached by a screw inserted into the ball. Possibly some variation of Newton's conservation of momentum experiment