CONRAC CORP C5A COMPUTER TEST SET

Anyone know anything about this piece of test equipment? I have one
in good working condition and would like to know what it is used for
and if it still has a usefull value. Any help would be apreciated.

CONRAC CORP COMPUTER TEST SET P/ N 3052900 S/ N 0006.

TEST SET,COMPUTER
Manf: INTERSTATE ELECTRONICS CORP. DBA
Part#: MR0413A
End Use: AIRCRAFT,MODEL NO. C5A

MRC: Requirement Name: Requirement:
NAME ITEM NAME TEST SET,COMPUTER
ABGL WIDTH 22.200INCHES MAXIMUM
ABRY LENGTH 34.000 INCHES MAXIMUM
AGAV END ITEM IDENTIFICATION AIRCRAFT,MODEL NO. C5A
ANPZ INCLOSURE FEATURE SINGLE ITEM W/CARRYING CASE
AQXY TEST TYPE FOR WHICH DESIGNED COMPUTER STALLIMITER
HGTH HEIGHT 17.500 INCHES MAXIMUM
PRPY PROPRIETARY CHARACTERISTICS PACS
RDAL REFERENCE DATA AND LITERATURE TO 33A1-12-796-4
SUPP SUPPLEMENTARY FEATURES STALLIMITER COMPUTER TEST SET