The warm brown tone acts as a pre-established mid-tone — black charcoal and dark graphite drop into deep shadows while white chalk

cross-hatched felt-tip ink

rough fabric — and the tip itself holds its shape under hard pressure instead of fraying or splitting

hard technical graphite

leuchtturm1917 pocket notebook a6 squared Exot The warm brown tone actsA precise 5 x 5 mm graph grid pocket notebook in a matte black hardcover 90 x 150 mm fits jacket pockets and small bags while providing clean geometric structure for data tracking, spatial wireframes, and field calculations. The rigid hardcover doubles as a self supporting writing surface on the move. Thread bound flat lay construction, 80 g m ink proof acid free paper, 187 numbered pages. Format: A6 (90 x 150 mm) 187 pages 5 x 5 mm squared grid 80 g