1x Checkerboard alumina calibration plate diffuse reflection non-reflective 12*9

(1) High Purity Alumina Ceramic Disc 28mm x 1.27mm Substrate Plate Al₂O₃

1x Alumina Aluminum Oxide Ceramic Square Plate Sheet High Temperature Resistance

Alumina Dot Calibration Plate Optical Calibration Block Test Calibration Card

1x Alumina Aluminum Oxide Ceramic Square Plate Sheet High Temperature Resistance

High Purity 99% Alumina Ceramic Gasket Disc Wear Resistance and High Temperature

ONE LOT OF THIRTY SIX (36) HIGH PURITY ALUMINA CERAMIC SUBSTRATES TILES No.: 50

(1) High Purity Alumina Ceramic Substrate 28mm Square x 1.27mm Al₂O₃ Plate