Description

Manually-operated seismograph model that traces shock waves onto a pulled paper strip

and flight adaptations for bird biology teaching

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

an ignition light firing on compression for visual timing

Single B22 Lamp Holder Subcategory_Pitchers Manually-operated seismograph model that tracesSingle 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.

Exchange/Return Notes

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Final sale items are not eligible for returns or exchanges.
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Single B22 Lamp Holder Subcategory_Pitchers Manually-operated seismograph model that traces

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