B68-231
Status: Open
Item no.: 177214031559
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public
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manual
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B68-231 CIRCULAR SLIDE RULE. W.F. Stanley & Co. No. 540. Based on Fuller's Patent and marked "Fuller's Spiral Slide Rule." 17" long, very clean. Original box includes original instruction sheet, one label in lid intact. Missing the end bracket designed to allow it to be mounted on the box. Good+ 150-300




