Antique Bell System Vintage Meg Ohm Meter

You are bidding on a Bell System Meg-Ohm Meter I would say from around 1955-58. It is in great condition, It reads Megohms to Kilohms on the meter. The case is in excellent shape. I check inside of the meter and it is clean. No leaking battery. It will need a 9v battery installed inside to operate not supplied. This comes as is no warrenty.
I found out that it needs a 45 volt battery-not a 9 volt.