Hand-Painted 3D Amphioxus Embryonic Stages Anatomical Model on Base, 10 x 9 inch Subcategory_Charts and Posters Borosilicate glass 90cm barometer tube

Borosilicate glass 90cm barometer tube with a 3-4mm bore

Used to measure induced EMF as a magnet falls through a 100-turn coil on a 15mm acrylic tube

mapping 32 keyed features across the subsurface

Eleven-ohm 5A air-cooled rheostat with constantan winding on a 300x44mm vitreous-enameled steel tube and a slide-bar carriage carrying a phosphor-bronze contact

Hand-Painted 3D Amphioxus Embryonic Stages Anatomical Model on Base, 10 x 9 inch Subcategory_Charts and Posters Borosilicate glass 90cm barometer tubeAmphioxus embryonic development model reveals gastrulation, neurulation, and chordate formation for vertebrate evolution and developmental biology teaching.