An effective method for cleaning solder iron tips quickly, without heat loss.Features:• Made of low abrasive brass shavings• No water necessary• Durable iron holder with anti-slip pad• Size: 3.27" diameter...
Radiation source or historic curiosity? According to Wikipedia, the Scintillation Counter, invented in 1944, was designed to measure radiation from small amounts of uranium. These plastic-enclosed cards were apparently designed...