Pituitary Gland and Hypothalamus Model, Greatly Enlarged Science at Home Pair of 12 by 3

Pair of 12 by 3

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

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

and gas control on natural gas for high-temperature chemistry heating applications

Pituitary Gland and Hypothalamus Model, Greatly Enlarged Science at Home Pair of 12 by 3Greatly enlarged pituitary hypothalamus complex exposes the anterior and posterior lobes with connecting infundibulum for endocrine anatomy and physiology teaching.