These Flint Reagent Bottles have a wide mouth and come with Ground Glass stopper.
This is a Concave/Convex Glass Spherical Mirror , 50mm D x 15cm FL.
These Tubular Spring Scales are calibrated in both Grams and Newtons with transparent bodies and each size is color coded for identification.
These superior quality unmounted Double Convex Lenses with ground edges are useful for teaching a variety of optical principles.