Helice / cylinder - Pair of mechanical drawings

Standard trade courtesies extended with direct payment by check or PayPal. Established customers, dealers, and institutions may be invoiced. Dealer discounts do not stack with Biblio sale items and dealers are kindly requested to place orders directly to avoid issues with Biblio's automatic system. Direct dealing is promised to be swift and straightforward. Please email info@alsobooksbooks.com We reuse packaging whenever possible, so your parcel may not be pretty, but your shipment will be safe. Orders valued over $200 may require signature confirmation (buyer will be informed before shipment). Items are guaranteed as described or may be returned for full refund, postage paid. General returns are accepted within 30 days with advance notice, buyer to pay return shipping. Returns should be packaged in the original shipping container to avoid damage. All items are subject to prior sale. If express service or special handling (gift wrapping, delayed shipment) is required, please email us and we will do our best to accommodate any requests. Estimated delivery times provided by Biblio are not guaranteed delivery dates, and we cannot assume responsibility for any delays caused by USPS, natural disasters, etc. Select items may require additional shipping, which will be quoted at-cost, if necessary. We ship internationally via Biblio's consolidated shipping program, other carrier options may be available by request. Please contact info@alsobooksbooks.com with any order questions.