| Reference Number: Avaluer:4342327 | Country/Region of Manufacture: Japan |
Hemmi No. 260 ' Advanced Engineer ' Slide Rule. Duplex. Bamboo. 25 Scales.
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Sun Hemmi No. 260 12 " 25 Scales Duplex Bamboo Slide Rule Calculator Japan
Sun Hemmi 260 Advanced Engineer Bamboo Slide Rule Dcsc May 1963
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