Polypropylene Test Tube Rack for 40 x 20mm Tubes Subcategory_Dropping Funnels Greatly enlarged pituitary-hypothalamus complex exposes

Greatly enlarged pituitary-hypothalamus complex exposes the anterior and posterior lobes with connecting infundibulum for endocrine anatomy and physiology teaching

Single-pole double-throw switch on a demonstration base

Round convex glass mirror for physics optics experiments in reflection

and an 18mm attachment diameter for pulling small weights in mechanical-advantage experiments

Polypropylene Test Tube Rack for 40 x 20mm Tubes Subcategory_Dropping Funnels Greatly enlarged pituitary-hypothalamus complex exposesSnap together polypropylene test tube rack holding 40 tubes up to 20 mm across a 9. 75 inch length, shipping flat and disassembling for easy cleaning between uses.