Image: Uy-multi1-hy
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Description: Detail of "flat spring" U-Y type multi-contact relays of type installed in 1950s and early 60s. The relay at right has its cover removed, showing contacts and actuating card. These relays were used extensively in connector circuits throughout crossbar offices. Seen here at the No. 5 Crossbar office on display at The Museum of Communications in Seattle, Washington. June, 2000.
Title: Uy-multi1-hy
Credit: Transferred from en.wikipedia to Commons.
Author: Yeatesh at English Wikipedia
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC-BY-SA-3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
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