Description
six steel wires carrying 20 beads each for hands-on instruction in counting
465 nm peak (blue)
Ninety-five-piece molecular model set with 53 atoms and 42 links spanning organic and inorganic chemistry
iodine mordant
and gauze-fronted object and receiving screens form this 1
Optically Worked Double Convex Glass Lens, 75mm Diameter, 300mm Focal Length Length_150mm six steel wires carrying 20Long focal double convex glass lens at 75mm diameter and 300mm focal length, the f 4 geometry pushing focal point well downrange for projection style image formation demos.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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