US$ 140.00
Glazed porcelain mercury trough at 75mm diameter with interior and exterior glazing
illustrating the high-ratio speed reduction and self-locking action of worm gearing
one (1) 250mL borosilicate glass graduated flask
half-blue painting
and oscillating springs
Paleozoic Bivalve Fossil Replica, 3cm Type_Low Form Glazed porcelain mercury trough atThree cm Paleozoic bivalve fossil replica demonstrates ancient marine shell anatomy for classroom paleontology without disturbing original specimens.
US$ 140.00
US$ 108.00
US$ 15.99
US$ 169.99
US$ 170.00
US$ 170.00