Standard-Ground-Joint Stopcock, 24/29 Socket, 1000-2000mL, Borosilicate Glass Face Size_38mm Hand-cranked 12V DC generator in

Hand-cranked 12V DC generator in a clear plastic case with a front-mounted lamp and binding posts

and Steinheim — hand-painted for evolutionary anatomy instruction

copper's high conductivity minimizing heat loss during mixing in thermodynamics work

designed for conversion into ammeters or voltmeters of any range using external shunts and voltage multipliers

sized to reconfigure the demonstration meter as a 0-1A ammeter for full-class viewing of student-built circuit currents

Standard-Ground-Joint Stopcock, 24/29 Socket, 1000-2000mL, Borosilicate Glass Face Size_38mm Hand-cranked 12V DC generator inBorosilicate 3. 3 glass stopcock features standard 24 29 ground joints for secure vessel connections and precise flow control in laboratory applications.