Maybe one of these similar products would be of interest:-
Log Card for use with PM3 and PM4 Monitors Concept 2 Rowing Machine concept2 New
Concept 2 PM4 Rowing Machine Rower Monitor
Log Card use w/ Concept 2 Rowing Machine concept2 Workout Train logcard PM3 PM4
Concept 2 PM3 PM4 Logcard Log Card & Phone Cradle Holder Rower RowErg SkiErg