A.W.Faber-Castell, Stein bei Nuernberg / Germany (1924) ************************************************************************ SCALES of the FABER-CASTELL » COLUMBUS / System A.Rohrberg « Model 342 ======================================================================== Front Side Back Side ======================================================================== ( 0 ... 37 cm Ruler ) (W2) sqrt(10X) 8 .. 9 .. 1 .. 2 .. 3 .. 3.6 ------------------------------------------------------------------------ (W2') sqrt(10X) 8 .. 9 .. 1 .. 2 .. 3 .. 3.6 (WI2') 1/sqrt(10X) 4 ... 3 ... 2 ... 1 Shilling (s/£) Pound Conversion Scales (WI1') 1/sqrt(X) 1.2 .. 10 ... 3.2 Penny (d/£) Pound (W1') sqrt(X) 2.5 ... 8 ... 10 .. 11 ------------------------------------------------------------------------ (W1) sqrt(X) 2.5 ... 8 ... 10 .. 11 ------------------------------------------------------------------------ REMARKS: Before Start the Slider has to be moved about 3cm to the right ======================================================================== To use the Conversion-Scales, the slider has to be turned This oversized »MERCHANT« is good for all other professions too, because it is a PRECISION SLIDE RULE. On its back are conversion tables. Its scales on celluloid veneer are unusually arranged ... Compare the SCALE DESIGN ( see sketch ) with the NESTLER »PRAEZISION«, the »WICHMANN-1417« ( made by A.N. = Albert Nestler), the POST-1442 » Dual 10"/5" POCKET-SR « and the "modern" FABER-CASTELL »NOVO-DUPLEX« Historical Remarks ... Fortunately this is the rare EBONY version of the »342«. Unfortunately it was found in a flea-market in bad shape without cursor. The CURSOR is now home-made of aluminum with a window of PVC from a CD case. The hairline is made with a »X-ACTO« and colored with a marker. "MouseOver" the cursor in the picture to get a DETAILED VIEW in a POP-UP window. Production Code = 4_2 = Feb. 1924 impressum: *********************************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 02/28/10 |