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

and heart-tube formation for embryology and developmental biology teaching

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

and great vessels on a mounted base for cardiology and anatomy teaching

this cover-protected single rheostat carries a constantan winding with 4mm safety socket terminals

Carbon rod with brass terminal sized for general electrochemistry work

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.