Slide Rules

These are the slide rules I own.

Engineering Instruments Inc. 10 inch slide rule, Model 10B No quick reference on back. Bought on eBay so I would have a 'play with' slide rule.

Keuffel & Esser Model 4088-3 (serial 253142). In leather case, missing tuck flap. Generous gift by John Kruse.

Pickett Model N600-ES This is my pocket slide rule. It's durable, aluminum and bought new in box on ebay so I would have one to carry in my bag. Yes I do use it, generally when I don't want to wait for my HP 49G+ to power on.

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