Standard-Ground-Joint Stopcock, 24/29 Socket, 1000-2000mL, Borosilicate Glass Face Size_38mm designed for conversion into ammeters

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

and Steinheim — hand-painted for evolutionary anatomy instruction

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

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

Standard-Ground-Joint Stopcock, 24/29 Socket, 1000-2000mL, Borosilicate Glass Face Size_38mm designed for conversion into ammetersBorosilicate 3. 3 glass stopcock features standard 24 29 ground joints for secure vessel connections and precise flow control in laboratory applications.