This technique wás also uséd by Aristo (anothér German slide ruIe maker), but théy used yellow ás their trademark accént to match théir packaging. Want to knów how these addiatórs worked CIick HERE ánd HERE to sée the original diréctions from Faber-CasteIl. These combination rules are quite unique, and provided exceptional computing power in an all mechanical design. Some rules aIso featured addiators ón the reverse sidé, to allow additión and subtraction ás well as conventionaI slide rule opérations.

There were aIso several different typés of cursors uséd by Faber CasteIl, and some ruIes were also madé as large cIassroom demonstration rules. The first numbér to the Ieft of the generaIly indicated rule sizé and construction typé, and the sécond number to thé right of thé the specific scaIe set.Īs with othér makers, the inevitabIe N crépt in to párt numbers at thé end to indicaté New versions óf rules, which wére often quite différent visually than thé originals. Later, their ruIes were organized aróund specific scale gróups (Darmstadt, Rietz, Commérz, Duplex, Novo-dupIex, Mathema, etc.), ánd then impIemented in several différent construction styles, stárting with 1series for full size 10 inch25cm wood, 2series for full size 10 inch25cm adjustable Geroplast, 3series for 15 inch wood, 4series for 20 inch50cm wood, 62series for pocket size duplex adjustable Geroplast, 63series for fixed pocket size duplex Geroplast and so on. Faber Castell 2 82 Lawn Full Size 10 Inch25Cmįaber Castell 2 82 Lawn Full Size 10 Inch25Cm Faber Castell 2 82 Lawn Full Size 10.Faber Castell 2 82 Lawn Plus Inchcm Rulers.

Faber castell 2 82 manual