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NEW still in is original box is a Vintage Pickett Model N400-T Pocket Slide Rule. It is All Metal with Original Leather Case, with the Traditional White Finish,This slide ruleisa highly specializedall-metal aluminum pocket slide ruledesigned primarily as a\"Business Rule\"for financial, commercial, and retail calculations. Rather than the advanced trigonometric or logarithmic scales used by engineers, the N400-T features a unique layout tailored to business mathematics like percentages, margins, markup, and unit pricing. It measures 6\" long.
Again this is NEW still in its original box, but I am also including 2 more slide rules and one ruler. These three are also in their original case and all look to be in excellent condition. The one in the brown leather sleeve is a SUN Hemmi #34RK, the one in the blue sleeve is unmarked other than the case that says Japan and the ruler is made by Dietzger
These are coming out of an estate of a 98 year old who collected office equipment
