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This vintage Heathkit assembly manual is a must-have for collectors and enthusiasts of vintage test equipment. The manual covers the operation and maintenance of the GDA-19-41 digital proportional servo, providing detailed information on how to use and adjust the device. With its original pages and comprehensive instructions, this manual is a valuable resource for anyone interested in the history of test and measurement equipment. Whether you're a collector or a history buff, this manual is sure to provide a fascinating look into the workings of a piece of electronic history.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.