15mm Mini Boss Head Clamp Pack Size_7 expanding and closing to suit

expanding and closing to suit different optical-component sizes on a single bench-mounted holder

Open-top cylindrical dropping funnel in borosilicate glass holds 50mL with PTFE key stopcock for controlled liquid addition in chemistry procedures

Compact 2mm-plug connecting lead in the small-scale lead family

Wooden-base Newton's color disc at 13 inches tall

Ten-thousand-microfarad electrolytic capacitor in an ABS module with 4mm sockets

15mm Mini Boss Head Clamp Pack Size_7 expanding and closing to suitCompact metal mini boss head sized for 15 mm rods, connecting lightweight clamps and accessories to retort stands in small scale laboratory assemblies.