Which DMM first used OL instead of a 1 for over range (over load)?

• Which DMM first used OL instead of a 1 for over range (over load)?
  Posted by BeBuLamar on 23 Apr, 2021 11:38
• Which DMM and when did DMM manufacturers changed from a 1 in the left most digit to indicate over range to OL?
• #1 Reply
  Posted by Fungus on 23 Apr, 2021 11:59
• My Fluke 8060A says OL, that's the oldest I've got.
  
  
  
• #2 Reply
  Posted by BeBuLamar on 23 Apr, 2021 12:23
• Wow! Thanks. I am kind of surprised too because I was thinking only autoranging DMM uses OL. I was wrong.