Vintage PICKETT Model N902-ES Slide Rule Ruler Simplex Trig Slipstick Case USA

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Vintage Pickett Model N902-ES Simplex Trig Slide Rule Rule w/ Faux Leather Case

Pickett USA N902-ES Simplex Trig Metal Slide Rule w/ Leather Case Vintage

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Vintage Pickett Simplex 10in Trig Slide Rule Model N902-T & Case, w/original box

Vintage PICKETT Model N902-ES Slide Rule Ruler Simplex Trig Slipstick Case USA