Line Sockets

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An attempt to categorize the various types of line sockets found on older tek scopes

Twist Lock

Have only seen one on a 549 and a 067-0596-00. Was this available as an option on some models? This appears to be a Non-NEMA Hubbel Midget twist-lock connector. Catalog page

3 pin Edison (recessed)

3 pin Edison (proud)

Found on a majority of the 500 series scopes

2 pin (recessed)

Found on older, non-plugin scopes, such as the 514. Pin spacing is standard 1/2". Chassis cutout is 1.25", Chassis mount hole spacing is 1.5" Is the metal ring on the inside of the socket part of the ground connection, as found on some multi-phase twist-lock connectors?