| 摘要 |
An improved soldering-desoldering instrument is disclosed which includes a stainless steel, thin walled sheath having a front end which is both internally and externally threaded: internally for securing the electric heater cartridge, and externally for securing the soldering tip, all in very high thermal energy flow relation. The rear of the sheath is formed integrally with a hexagonal nut to facilitate the indicated threaded assembly and disassembly.
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