Pituitary Gland and Hypothalamus Model, Greatly Enlarged Science at Home Rotary-knob resistance substitution board offering

Rotary-knob resistance substitution board offering twelve discrete values from 33 ohms to 10M ohms with 4mm lead connections

Small 4-inch solar cell on a 4mm-terminal panel

and 4-pole armature configurations on the same motor frame by swapping interchangeable enameled-copper armatures past a permanent bar magnet on a disc commutator

universal 50 x 50mm slide holders

Pituitary Gland and Hypothalamus Model, Greatly Enlarged Science at Home Rotary-knob resistance substitution board offeringGreatly enlarged pituitary hypothalamus complex exposes the anterior and posterior lobes with connecting infundibulum for endocrine anatomy and physiology teaching.