500B Frequency Meter 500C Tachometer Indicator

500B Electronic Frequency Meter 500C Electronic Tachometer Indicator Operating and Servicing Manual by Hewlett Packard. Published by Hewlett-Packard Co, Palo Alto, CA, 4/6/59. Revised Edition. Paperback. Size 4to. Condition: VG. Front cover has bottom front corner torn off, overall content excellent. Manual illustrated with drawings and black and white photographs. Includes 3 page supplement, Calibrating and Operating Instructions 500BL Electronic Frequency Meter. 54 Pgs. Description text copyright 2007 www.BooksForComfort.com. Item ID 15532.