This precision 90-degree fixture base is engineered from hardened tool steel (HRC 45–55) to provide a stable vertical mounting surface for CNC applications. Featuring an integrated dual-grid system, it supports both 52mm and 96mm stud pitches ($\varnothing$16 and $\varnothing$20 studs) with a repeatability of $\le$ 0.005mm. Weighing 15.5 kg with dimensions of 18.8 $\times$ 23 cm, this robust “L” plate is ideal for high-accuracy, multi-face machining tasks requiring exceptional rigidity.