Try a number raised to the 2/3 power. Set the cursor on the number on the K scale and read the result on the A scale. And, of course, do the opposite to raise a number to the 3/2 power.

A slide rule such as the K&E Log Log Duplex Decitrig that I used in college has additional scales folded at pi. So to multiply a number by pi simply set the cursor at the number on the D scale and read the result on the DF scale. Do the opposite to divide by pi.

On some of the simpler Mannheims which do not have an ST scale the S scale works with the A and B scales, e.g., a Sterling Precision. Align ends of the scales on the slide with the ends of the scales on the frame. To find the square root of the sine of an angle set the cursor on the angle and read the result on the D scale. And, of course, to find the 3/2 power of the sine of an angle ...

I can go on and on, but I'll stop there for now.

*Edited: 5 Nov 2009, 9:38 p.m. *