A slide rule, inscribed: MODEL N803-T LOG LOG SPEED RULE DUAL BASE
https://mastodon.sdf.org/system/media_attachments/files/108/195/456/792/178/124/original/31c6b06a6c9c9a38.jpeg
@neauoire you can't jus give slide rules away, they're intellectual property! someone applied for patents! which patents? never you mind, buster
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