U-Tube Glass Manometer with Printed Scale, 80-0-80 Light & Optics_Color this regulated low-voltage DC power

this regulated low-voltage DC power pack outputs a fixed +12V through front-panel terminals on the benchtop

0V DC max for through-hole circuit work and indicator-light applications in introductory electronics units

and hygrometer in a single classroom-scale unit for monitoring room conditions at a glance

Beech wood test tube rack holds 12 tubes up to 20mm diameter in a 9-inch frame for organized storage during chemistry and biology experiments

U-Tube Glass Manometer with Printed Scale, 80-0-80 Light & Optics_Color this regulated low-voltage DC powerBorosilicate glass U tube manometer with a built in stopcock mounted on a back plate 80 0 80 scale at 2mm subdivisions, for visualizing gas pressure differences in fluid mechanics work.