Demonstration Compass Science at Home gripping flasks and condensers up

gripping flasks and condensers up to 4

producing more sinusoidal oscillation than a standard helical spring for SHM studies

An 18mm pole gap on this 37 x 13 x 10mm Alnico U-shape concentrates field strongly enough to bend filings into clear field lines

Double-concave glass lens at 3-inch diameter and 200mm diverging focal length

with both 4mm stackable sockets and screw terminals so leads wire in without an adapter to either bench standard

Demonstration Compass Science at Home gripping flasks and condensers upFive inch demonstration compass with a 4 inch magnetic needle and a printed compass map, sized so the needle stays readable from the back of the room.