ultrasonic Continuous Wave Generator With Probe, Power Consumption: 5-60 Va; Failure at 100 Va, Mains Voltage: 90-230 V, 50/60 Hz, Fuse: T630 Ma at 115 V; T315 Ma at 230 V, Generator Frequency: </=20 Mhz, Frequency Increment: 1 Hz
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: 250 mm focal length, Lens measures 3in diameter, 0.2 weight
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: 100 mm focal length, Lens measures 3in diameter, 0.3 weight
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 3in diameter, 0.1 weight
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