Not what it could be. - Broset Precision Stop Block

I bought one of these with the idea if it worked I would buy another.
#1 compared to a bisemeyer clamp it is a toy. It takes to long to clamp it.
#2 the Magnifying glass is to powerful unless you already have coke bottle glasses.
#3 When it is clamped in place i can be bumped and moved rendering it worthless.
A better clamp design for quick fastening and un fastening would be pretty simple.
Before you mfg. another 100k of these improve the design.