Skills About Metal Recognition Ferrous Scale 100% Ferrous Scale 100% Depth Detection Table HS-6000 BasicItem SizeDepth 1m x 1m CoilDepth 2m x 2m Coil7cm (3″)120cm (3’6″)160cm (5′)15cm (6″)160cm (5′)220cm (7′)15cm (9.5″)180cm (6′)250cm (8’3)40cm (15.5″)220cm (7′)275cm (9′)50cm (19.5″)250cm (8’3″)305cm (10′)Depth test conducted in air. HS-6000 AIItem SizeDepth 1m x 1m CoilDepth 2m x 2m Coil7cm (3″)120cm (3’6″)160cm (5′)15cm (6″)160cm (5′)220cm (7′)15cm (9.5″)200cm (6’6″)275cm (9′)40cm (15.5″)240cm (8′)390cm (11’9″)60cm (26.5″)390cm (11’9″)500cm (15′)Depth test conducted in air.