Pickett Model N902-T Simplex Trig Slide Rule w/ Leather Case USA Vintage

Pickett N902-T Slide Rule Simplex Trig w/ K & E Case Vintage USA

Pickett N902-ES Simplex Trig Slide Rule with case N902ES Made USA Vintage

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

Pickett N902-ES Simplex Trig All Metal Slide Rule w Case

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

Vintage Pickett N902-T Simplex Trig Slide Ruler w/ Leather Case

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