10-Piece Solid Brass Slotted Mass Set Type_Round End Open-frame economy DC motor on

Open-frame economy DC motor on a 10x10cm molded ABS base

The waves generated such are demonstrated using linear rope/thread

Hand-painted dicot root transverse section model exposes epidermis

Open Laplace rail with a free-moving conductor and 4mm sockets

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

10-Piece Solid Brass Slotted Mass Set Type_Round End Open-frame economy DC motor onPrecision machined ten piece solid brass slotted mass set totaling 1100 grams from 10 to 500 gram pieces, displayed on a plastic and metal rack with a carrying handle for transport.