★ Precision Specimen Calibration: This sample flattener aligns samples perpendicular to optical axes and keeps top/bottom planes parallel for repeatable, reliable lab measurement results. ★ 0.5mm Ultra-Flat Tolerance: Delivers flattening precision within ≤0.5mm flatness error to meet high-standard metallographic analysis. Flawless reference surface cuts material waste and speeds up daily specimen preparation in material labs. ★ Parallel Bench Leveling Mechanism: Fix specimens with plasticine or universal clamps, then press the handle to adjust planes for fully aligned metallographic slices quickly. ★ Compact One-Hand Operation: Space-saving simple frame requires no complicated setup or professional training. Secure samples and press the handle to finish leveling, lowering learning cost for new lab technicians. ★ Multi-Industry Lab Compatibility: Works for metallographic specimen flattening across electronics, lithium batteries, steel, aerospace and auto parts labs, compatible with all metal and alloy material test slices.