Beyer equivalent of Racing Post numbers?

[Gauchos0522]

Shuback did have a write up on them when the Form changed over from timeforms explaining the equivalency of the numbers to certain class levels. I give them a quick glance but to really investigate a foreign shipper try to look for replays of his previous races and if he's from GB use the attheraces site where they give you loads of information on each horse and their individual races.