Multipurpose Clamp Holder, up to 16mm Rods Material_Acrylic Engineered with a higher spring

Engineered with a higher spring constant than a classic coiled novelty spring

each fitted with 98 iron-rod plotting compasses in a 14 x 7 matrix that align with field lines whenever a magnet is brought near

the shared mass isolating volume and density as the distinguishing variables across metals and polymers

exposing the triangular rotor's epitrochoidal motion with a lamp-lit ignition point

Multipurpose Clamp Holder, up to 16mm Rods Material_Acrylic Engineered with a higher springTwo rectangular slots accept square or round rods up to 16 mm in this aluminum alloy multipurpose clamp holder, which also mounts to bench edges and boards of equal thickness.