A cylindrical brass casing has a round face covered in glass. The casing has a broader lip around the rear edge through which holes are…
A black metal cylindrical magnet which is 9.5cm in diameter, on the tripod legs with leveling screws. On top of the cylinder there are 2…
A cast iron circular base with tripod legs on levelling screws and in between two of the legs there are two metal terminals. The circular…
A large black square base topped by an arc-shaped scale behind a glass window. The bottom of the top face has a glass bubble through…
Spherometer consists of a black-painted metal measuring disc and a ruler mounter on a tripod black-painted metal base. Measurements on ruler are metric, measurements on…
Metal rod set in black plastic circular stand, supporting a small connected network of metal pins and clear glass or plastic discs and triangular pieces.…
Spherometer with box (half of box). Spherometer consists of a metal measuring disc and a ruler mounter on a tripod base. Measurements on both are…
Spherometer consists of a black-painted metal measuring disc and a ruler mounter on a tripod black-painted metal base. Measurements on ruler are metric, measurements on…
Glass lens enclosed in brass frame.
Mountable black metal sqaure with black metal spring around the top quarter of the square. Component at bottom of square is movable.