self-registering

• POS: Adjective
• HYPHEN: self-reg=is=ter=ing

CIDE DICTIONARY

self-registering, a. 

 Registering itself; -- said of any instrument so contrived as to record its own indications of phenomena, whether continuously or at stated times, as at the maxima and minima of variations; as, a self-registering anemometer or barometer.  [1913 Webster]

OXFORD DICTIONARY

self-registering, adj. (of a scientific instrument etc.) automatically registering its measurements.