Chauvin Arnoux AEMC Instruments C.A 771 IP2X Notice De Fonctionnement page 25

1.2. ON THE BACK
There are two ways to attach the black test probe to the back:
„ flat, with a 16 mm distance between test probes,
„ on the side, with a 19 mm distance between test probes.
16 mm
Red test probe
(underneath).
Black test probe.
Guards.
Battery compart-
ment cover.
25
19 mm