Description
Long-focal double-concave glass lens at 75mm diameter and 300mm focal length
5 inches on an 8 by 8 by 2
Cut-away 17-inch active volcano model reveals magma chamber
Visualizes the Venturi effect on an 18-inch backboard
22 SWG Bare Copper Wire, 225ft Reel (0.71mm Dia) Capacity_1000mL Long-focal double-concave glass lens atUsed in finer coil winding and resistance vs length experiments, this 22 SWG bare copper wire on a 250g reel runs about 225 feet the workhorse fine gauge of the line.
Exchange/Return Notes
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