This model of the universal angle meter LASER PRO replaced the previous MASTER and differs from it in appearance and design. For example, the new version has no flexible wire connection between the laser and the power board. Now both the board and the laser are rigidly mounted in a single ring structure. However, the main feature of the new model is the interchangeable scales and the correspondingly different width of the blade that can be measured.
sharpeningtool.eu/en/catalog/...