Pickett Model N 3: Difference between revisions

The smaller brother of the N 3, the N 3P has all the same scales, and therefore the same functionality as the original N 3, but in a "pocket" form factor.  The smaller size of only five inch scales necessarily comes with a loss in accuracy, as with all analogue calculators, but in most cases can give answers accurate enough for any field work or quick estimates one may need.  With careful planning and estimation, some users can even gain a fourth significant digit out of it in certain cases.  The N 3P also came in both white and ES Yellow colors, with the white being increasingly rare in most markets.

The N 3 and N 3P both have identical scales and layout as duplex engineering rules.  They have the common set of scales for most engineering rules of the day, but also a few unusual scales which give a slight edge over competitors, such as the extended cube root scales, and the inverted DI scale on the body of the rule.