Spherometer for Surface Curvature Measurement Pack Size_8 and heart-tube formation for embryology

and heart-tube formation for embryology and developmental biology teaching

Ceramic ring magnet with 18mm outer diameter

5mA DC interchangeable scale on a 315x115mm laminated panel with integrated shunt

designed to receive real images projected by lenses and concave mirrors during focal-length and magnification experiments on the optical bench

Beaker stands 7

Spherometer for Surface Curvature Measurement Pack Size_8 and heart-tube formation for embryologyThree legged spherometer with legs spaced 40 mm apart and a vertical scale reading 10 to +10 mm at 0. 01 mm resolution, calculating radius of curvature for round and spherical optical surfaces.