US$ 450.00
visible crankshaft
and phosphorus for organic-chemistry work
Ratchet-stopped nickel-plated brass 25 mm micrometer screw gauge reading to 0
Hand-driven Newton's color disc that spins seven painted segments fast enough to merge into apparent white through persistence-of-vision and additive color mixing
100-Pack Nickel-Plated Dissection T-Pins, 2 inch Manufacturer_hBARSCI visible crankshaftNickel plated T pins provide secure specimen pinning with broad heads for stable dissection board mounting in biology laboratories.
US$ 450.00
US$ 450.00
US$ 108.00
US$ 95.86