Electrical connector testing apparatus for detecting obstructions in the connector contact terminal pin receptacle channels caused by defective receptacle blades (18, 19). A carriage (22) for retaining a connector (20) in an upright position is movable between upper and lower horizontal members (40,...http://www.google.co.uk/patents/US4405233?utm_source=gb-gplus-sharePatent US4405233 - Photo-electric apparatus for testing electrical connector contacts
