Vintage HEMMI P280 Slide Rule. Excellent condition. Original case & Instructions

Faber Castell Ruler No 57/87 Vintage School Slide Rule for Draughing Drawing

'Unique' Universal II Slide Rule Made in England Vintage Measuring Tool

Hemmi SUN Slide Rule Original Case Japan Patent 22129

Vintage Slide Rule A. G. Thornton Ltd 4865 vintage rare 131 with box

Vintage Sun Hemmi P280 Slide Rule Japan Technical Calculator Case Boxed 1970s

Vintage Slide Rule Hemmi No. P262 Made In Japan with Case

Vintage Sun Hemmi Bamboo Engineering Slide Rule System mid section removes