Rudolph Instruments DigiPol-DP781 Series ForumsSign in to Start a DiscussionStart a Discussion Tue Jun 09 2015Asked byBulcsú Rác intresting characters on the print out after battery exchange Thu Jun 05 2014Asked byArn Define Controls Page 1 of 1 1Ask a QuestionStart a Post: Rudolph Instruments - DigiPol-DP781 SeriesSubjectEnter a question about troubleshooting, PM, buying advice and more… Sign in to Submit your DiscussionSubmit your Discussion