GADGETS#51 - DIY STETHOSCOPE DEMO
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GADGETS#58 - SOFT BEARING DYNAMIC BALANCER
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Homemade ULTRA SENSITIVE Ground Listening Probe ~ Locate Buried Pipes!
21:02
GADGETS#37 - HS101 BNC BUILD
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Can you build your own Electronic Stethoscope? Learn how to build and amplifier circuit
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GADGETS#29 - DIY COP PADDLE PROBE
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How to make Portable Automatic Spot Welder
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GADGETS#94 - 60:1 DIY PRIMARY ATTENUATOR
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