Double Convex Lens, Highly polished, optically true lens is excellent for physics classroom demonstrations in optics and light refraction, with ground edges, great for physics classrooms, with highest grade, Size: 200 mm focal length, Lens measures 2in diameter, 0.2 weight
Practi-Sodium Chloride* I.V. Solution Bag (for training), Solution Bag for clinical training, Contents: Distilled Water, simulation for your nursing, pharmacy, EMT or other allied health skills laboratories, Size: 500 mL
Simple Atwood Machine, include Apparatus and 2 pulleys connected by a rod, 1.75inch plastic pulleys connected to a 3inch rod, Overall length is 8.25inch, Two pulleys are connected by a metal rod.