This quality and rather unique round slide rule is called the Woven Fabric slide rules and was constructed by Smiths (Calculators) Ltd from England for the ICI Company. It is based on the “TERLYENE filament Yarn for Apperal uses” from 1968 and was used for rapid calculations for the design and manufacture of woven fabrics. On the back is also a Yarn count conversion slide rule for different systems known at that time. The original manual explains all in English. It als comes with the original sleeve. The black scales are static where the red scales can be set with use of the blue markings in the cursor. It is heavily constructed and in great condition, it measures ca 14 cm or 5 3/4 inches in diameter. Check the attached video on how to work your vintage man tool : slide rule operation instructions!
Smiths Woven Fabric circular slide rule full set ICI 1970 England
Smiths Woven Fabric circular slide rule in full set, made for the ICI Company ca. 1970 in England
For full description, please scroll down. For special orders you can use the contact page or check the FAQ.
Out of stock
Shipping & Delivery
Ask quote for your specific order please! GUIDELINES are but not restricted to: Shipping rates NL- 5 euro - EU shipping 15 euro - World shipping 25 euro - 10% discount on orders over 100 euro. Minimal order amount 25 Euro. If this does not work for you please contact me at email@example.com All mail answered within 12 hours but most of the time much quicker!