US$ 297.50
sized for sustained workshop work where the smaller 25W and 65W irons can't keep heavy joints flowing solder
Copper 1-inch diameter pendulum bob at 2
demonstrating the mechanism behind crankshaft pistons and steering racks
with banana-plug terminals for physics and electronics laboratory lead connections
Premium Gyroscope on Metal Stand with String Glassware_Glass Flasks sized for sustained workshop workHeavy duty all metal gyroscope with a 7. 5cm brass rotor balanced on three pairs of adjustable cast iron pivots, for studying precession, angular velocity, and torque.
US$ 297.50
US$ 427.50
US$ 597.50