Spare Gilley Coils Set, 2-Piece, 4.5cm OD Subject_Earth Science integrating with standard projection setups

integrating with standard projection setups for formative assessment and active engagement

Semi-stiff nylon bristle brush on a twisted stainless steel wire handle

Dial-selectable multi-tap battery eliminator delivering 1

exposing the longitudinal and transverse components of wave motion mechanically

Two-speed ticker timer kit printing 25 or 40 dots per second on paper tape via carbon discs

Spare Gilley Coils Set, 2-Piece, 4.5cm OD Subject_Earth Science integrating with standard projection setupsReplacement pair of Gilley coils with a 1. 5cm inner and 4. 5cm outer diameter, sized to keep electromagnetism demonstrations running when the original coils wear out.