>The point of the article is that he can set the C and D scales to the proportion he needs, one time, and then just move the slider around for each ingredient, rather than doing a different calculation for each ingredient.
Is punching a number into a calculator and then multiplying by M (memory function, for the scale factor) really that much work than carefully sliding tithe slider into position and reading/eyeballing the output?
This is indeed the point. Even with messy hands you can just look at the slide rule and read off the right amounts. No need to touch the calculating device.
Small children. I need to get to chopping the second we get home or all hell breaks loose. I can certainly not sit down in front of the computer for a few minutes.
It's not at all more work... I agree with the OP, this is a guy who really wants to use his slide rule and is pushing it over other (better) solutions.
Is punching a number into a calculator and then multiplying by M (memory function, for the scale factor) really that much work than carefully sliding tithe slider into position and reading/eyeballing the output?