level4dThe new HUEPAR LS04CG compact 4D laser level with green beams from Osram laser emitters. It projects four 360-degree planes: two horizontal, and two vertical withWhat Is the CAT4 Level D Test for Year 7? The Cognitive Abilities Test, or CAT4, is an assessment taken by students aged 6 to 17 in the United Kingdom and Republic of Ireland to access the child’s potential.. It provides an