Wooden Dynamic Trolley Stock Type_Build to Order Compact all-metal boss head with

Compact all-metal boss head with two stainless steel thumb screws joins rods up to 15mm orthogonally

a battery-free source of partial vacuum for bell-jar demonstrations without external power

this low-resistance shunt diverts a precise fraction of circuit current around the meter so small signals stay within full-scale

and 400 ppm

Six-piece laboratory-glass barware set bundles beaker shot glasses

Wooden Dynamic Trolley Stock Type_Build to Order Compact all-metal boss head withPair of 300mm wooden dynamic trolleys with spring loaded impulse rods at five compression levels, stacking pins, and rubber corks for momentum, collision, and Newton's third law experiments.