UTO No. 601 5" plastic slide rule w/ instructions, vintage, Union Carbide promo

Description

At the Assistance League of Bellingham we received an estate donation with this small plastic well made slide rule with leather pouch and the instructions.  It is a UTO No. 601.  In the case it's 6 1/2 inches long overall.  It slides smoothly.  It was apparently a promo item for Union Carbide Linde Molecular Sieves.  Please look at the photos and ask any questions, thanks.
We do combine shipping with additional items whenever possible. Please WAIT to pay and let us know if you're bidding on multiple items and want combined shipping.  You may pick up an item in person at our thrift shop in Bellingham and not pay a shipping cost (please give us advance notice).
Mission:  The Assistance League of Bellingham is an all-volunteer-powered nonprofit organization in Whatcom County, Washington State.  Proceeds from our eBay sales provide new clothes for children and youth in need, summer enrichment scholarships, gifts for care center residents, and emergency clothing for ER patients.  Please know that you can feel good about where your money goes!
Because this is a nonprofit organization, we cannot offer returns just “for any reason”; however we stand behind our descriptions, and if we fail to describe something accurately, then of course you may return the item for a refund!