Description
and cochlear detail for auditory teaching
Used to draw electrons from glass and ebonite rods during rubbing
Single large transparent plate filled with iron-rod plotting compasses
this concave glass mirror at 100mm focal length runs at f/1 for vivid real-image demos and converging-reflection work
Relay-based NAND-gate module on a demonstration base
Opisometer Geology and cochlear detail for auditoryOpisometer with a knurled wheel on a threaded spindle, rolling along curved lines on maps, charts, and drawings to convert winding distance into straight line length for geography coursework.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
You may also like
recommand products
