The Agilent 34194A (5061-8769) dual lock link kit is recommended for side-by-side combinations and includes links for instruments of different depths.
The Agilent 34194A dual lock link kit is compatible with the Agilent 34410A, 34411A, 34401A and 34420A DMMs, the Agilent 34970A Data Acquisition Switch Unit, the Agilent 53131A, 53132A and 53181A counters, the Agilent 33220A and 33250A.