Help needed, nutradip tri meter

[Greenthing]

Hi,
I have recently aquired a nutradip tri meter the and I cant find any infomation with reference as to what the readout is parts per million or EC, the reading I have is 050 on the tri meter, and is made in Canada if that helps.

[Greenthing]

So no help on this one,no one got one of these type of testers then.:(

[Greenthing]

Here is a photo of the meter. I made up some nute and took a reading with my old bluelab truncheon the reading was 1.3 EC then I took a reading with the new tri meter and that was 049 can anyone tell me what 049 is I dont understand it
[attachment=o199810]