US$ 60.00
and narrow — at 10 inches tall
the longer focal value yielding milder divergence for subtler virtual-image reduction in optics work
Manually-operated seismograph model that traces shock waves onto a pulled paper strip
and flight adaptations for bird biology teaching
and a motor accessory
Single B22 Lamp Holder Subcategory_Pitchers and narrow — at 10Single B22 bayonet lamp holder on a hard plastic base with two 4mm banana terminals, sized to drop a household style bulb into a student built circuit for power and Ohm investigations.