With Keysight's 1CM020A set of angles, measuring devices with 2 height units (88.1 mm height) can be mounted in a rack. The set contains a total of 4 angles, so that devices with 4 height units can also be installed. The hole spacing in the rack must be 4.44 cm (1.75 inch).
It should be noted that these angles have no recesses for device handles. This set of angles is compatible with the "System Plus II" device housings for measuring devices.