Freshwater Polyp Anatomical Model Racks & Stands_Bottle Stands Stout-walled thistle funnel in borosilicate

Stout-walled thistle funnel in borosilicate glass measures 30cm with thick construction for controlled liquid addition in chemistry procedures

Aluminum-cast Young's-modulus frame with bubble level

Labeled-terminal 50-ohm resistance unit at 7

the shallow apex producing minimal deviation for studying small-angle approximation in dispersion experiments

Copper-block plug key switch with two 4mm terminals and a removable plastic-guarded plug

Freshwater Polyp Anatomical Model Racks & Stands_Bottle Stands Stout-walled thistle funnel in borosilicateFreshwater polyp model demonstrates cnidarian anatomy, tentacles, gastrovascular cavity, and simple invertebrate body plan for biology teaching.