US$ 339.50
Used with standard laboratory filter funnels
with a 2-pole armature
supporting both qualitative and quantitative force-vs-distance student investigations
and gamete formation for reproductive biology teaching
the optical-grade crown body producing low-dispersion baseline measurements in refraction comparison studies
Worm Gear Drive Mechanical Demonstration Set Subcategory_Racks and Stands Used with standard laboratory filterHand cranked worm and wheel drive with a rotation dial between clear acrylic plates, illustrating the high ratio speed reduction and self locking action of worm gearing.
US$ 339.50
US$ 45.00
US$ 169.00
US$ 249.50
US$ 439.50
US$ 169.00
US$ 189.00
US$ 179.00
US$ 99.00