A vintage slide rule from a series produced by BOOTS THE CHEMIST within their RING PLAN range. 

This is a Boots Ringplan 10 inch log-log slide rule

A full sized item ... the rule remains in entirely sound, fully working condition. 

The clear perspex cursor is sound, clean and working well.  

 The rule features scales to both front and reverse - all as shown in my photographs.  

A SUPER, GENUINE VINTAGE ITEM which will be packed with care to ensure safe delivery. 

FREE UK SHIPPING!