Vintage Unbrako Socket Screw Calculator Mid Century Slide Rule Tool SPS

The Vintage Unbrako Socket Screw Calculator is a unique mid-century slide rule tool designed for engineers and enthusiasts. Manufactured in the United States, this SPS calculator showcases a retro design with a slidematic mechanism for precise calculations. Perfect for collectors of vintage slide rules or those interested in scientific and engineering tools from the past, this calculator offers a nostalgic glimpse into the accuracy and functionality of pre-modern tools. Ideal for showcasing in a collection or for practical use in engineering or physics projects.