Heavy Duty Mini Right Angle Boss Head, 15mm Rods Chemistry_Molecular Model Sets providing a fixed sighting reference

providing a fixed sighting reference for telescope and spectrometer alignment on the optical bench

and cytoplasm for classroom cell biology instruction

this decade resistance box substitutes for fixed resistors in circuit experiments

Designed to electrolyze water into separately collected hydrogen and oxygen

Mounted in a plastic case with 4mm safety sockets

Heavy Duty Mini Right Angle Boss Head, 15mm Rods Chemistry_Molecular Model Sets providing a fixed sighting referenceCompact all metal boss head with two stainless steel thumb screws joins rods up to 15mm orthogonally, sized to fit tight laboratory frames while carrying heavy loads.