My Pickett N1006-ES. A handy pocket rule! #Sliderule #Sliderules
My Pickett N1006-ES. A handy pocket rule! #Sliderule #Sliderules
My Pickett N1006-ES. A handy pocket rule! #Sliderule #Sliderules
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My Pickett N1006-ES. A handy pocket rule! #Sliderule #Sliderules
My Pickett N1006-ES. A handy pocket rule! #Sliderule #Sliderules