Inch   vs.   Metric   R U L E R S



There are 200 years of progress in between ... But the USA ?



Inch & Metric / Architectural & Engineering Scales



The Bakelite/Aluminum Parallel Ruler »ROLLBOY« from the '50s

 
   C O N V E R S I O N S :
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   1 Meter(m) = 100 cm = 1000 mm ;   1 km = 1000 m
   1 Yard(yd) = 0.9144 m ;   1 Foot(ft) = 0.3048 m ;   1 Inch(in) = 2.54 cm
   1 Mile = 1.6093 km ;   1 SeaMile(sm) = 1.852 km ;   Knots(kn) = sm/h

   1 Liter(l) = 1dm = 10cm x 10cm x 10cm
   1 Galone(gal) = 3.7854 Liter ;   1 Pint(pt) = 0.5683 Liter

   1 kg = 1000 g ;   1 Pound(lb) = 0,4536 kg   1 Ounze(oz) = 28.34 g

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© C.HAMANN           http://public.BHT-Berlin.de/hamann            09/23/09