heres a picture of my 7", the pocket size, normally you would carry in the breast pocket of shirt of coat..this is the front side, the make is a German Faber/Castell

For example, to calculate 3 x 2, the 1 on the top scale is moved to the 2 on the bottom scale. The answer, 6, is read off the bottom scale where 3 is on the top scale. In general, the 1 on the top is moved to a factor on the bottom, and the answer is read off the bottom where the other factor is on the top.

this is where I referred to the , in "them olden days", common joke about 2 x 6 = Approximately 11.9999999 or 12.0000001 lol