ACU-RULE MFG. CO., Mt.Olive. Illinois / USA (1960) ********************************************************* SCALES of the » ACU-MATH MANNHEIM TYPE « Model 400 ========================================================= ( one-sided only ) S sin(0.01X); sin(0.1X) S keyed to A/B K X3 A X2 --------------------------------------------------------- B X2 CI 1/X C X --------------------------------------------------------- D X L lgX T tan(0.1X) T keyed to C/D R E M A R K S : ========================================================= The TRIGONOMETRIC SCALES are divided in MINUTES & SECONDS 1 Grad = 60 Minutes (') 1 Minute = 60 Seconds (") +-----------------+ | NAVY EXCHANGE | The contents of the BLUE LABEL reads: | N.A.S.PENSACOLA | | A1 | The slide rule came in a box | 125-273 | together with a booklet | $ 1.50 Ea | and a plastic case +-----------------+ Historical Remarks ... impressum: ********************************************************* © C.HAMANN http://public.BHT-Berlin.de/haman 03/01/07 |