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

AG Thornton No. 121 Slide Rule / Slipstick with Case

Vintage UNIQUE Log Log Slide Rule No.95 With Case Mathematical Tool

Sun Hemmi Slide Rule NO. 256 db Neper DF - Made In Japan - Rare - Good Condition

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

Vintage Unique "LOG LOG" Engineering Slide Rule . Original Carry Case complete

Vintage Unique Universal Slide Rule Wood & Plastic with Instructions

Vintage Unique Universal II Slide Rule Measuring Tool & Box