Description :This quartz multi tester is specially designed for testing quartz watch battery voltage, average consumption current etc. Very useful tool for watchmakers. ...
Description :This quartz multi tester is specially designed for testing quartz watch battery voltage, average consumption current etc. Very useful tool for watchmakers. ...
The Line Tracing Snail uses a special LED sensor to detect a black line (magic marker, etc.) drawn on a white background. It uses two small motors and rubber tires to slowly but surely move forward and turn. The body of the snail is made...
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