Demonstration Meter Subcategory_Gas Generation Used to dial in any

Used to dial in any resistance from 0 ohms to 1

used both in galvanic-cell construction and as the photoemitter in classic photoelectric-effect demonstrations

one fitted with an exploder piston for momentum and action-reaction investigations

Designed to harvest plenty of light through a 100mm aperture

the lower-resistance higher-current option in the compact-tube rheostat line

Demonstration Meter Subcategory_Gas Generation Used to dial in anyPermanent magnet moving coil meter mounted in a transparent wooden box with all internal electrical connections visible, sized so students can see the moving coil mechanism while it reads.