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B170_A.JPG| [[B170-V|B170-V 170 Ω attenuator]] | B170_A.JPG| [[B170-V|B170-V 170 Ω attenuator]] | ||
Tek 517 ad.jpg | Tek 517 ad.jpg | ||
Tek 517A ad from Electronics Magazine 1955-12.jpg | Tek 517A ad from Electronics Magazine December 1955 | |||
517a rear vert interface.jpg|Direct CRT access mod | 517a rear vert interface.jpg|Direct CRT access mod | ||
517a single sweep controls.jpg|Single-sweep mod | 517a single sweep controls.jpg|Single-sweep mod |