Pickett Fisher Control Valve Sizing Rule

Click on the next link to see professional panoramic pictures of the Pickett Fisher model

N-1041-C

https://www.sliderulemuseum.com/Pickett/Pickett_1041-G_FisherUniversalValveSizingRule_RobertNCurry.jpg

N-1041-GP

https://www.sliderulemuseum.com/Pickett/S486_Pickett_N1041-GP_FisherControlsValveSizing.jpg

Images from The International Slide Rule Museum

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