Based on this product's specifications, here are some alternatives and similar models
INSIZE Angle Plate / Square 150x100 mm model 4790-0150, class 00
Summary description:
INSIZE angle plate (square) model 4790-0150 is a precision measuring and fixturing tool with nominal dimensions 150×100 mm and accuracy class 00. Designed for layout, inspection and machining setup tasks, it provides stable perpendicular reference faces for measuring, marking, clamping and aligning workpieces in workshops and inspection labs.