The Pickett Model N 3 "Power Log Exponential -- Log Log Dual Base" slide rule is one of the most powerful general-use rules in the Pickett line. The N in the name stands for "New" to distinguish from its predecessor, the Model 3.
Model N 3-T
Type
Slide Rule
Manufacturer
Pickett
Introduced
c. 1960
Discontinued
1975
Predecessor
Model 3
Cost
$26.95
Calculator
Precision
3 to 4 significant digits
Display type
Analogue scales, sliding cursor (white body)
Display size
10"
Programming
Other
Dimensions
12" long
Model N 3P-T
Manufacturer
Pickett
Introduced
C. 1959
Discontinued
1975
Cost
$13.95
Calculator
Precision
2 to 3 significant digits
Display type
Analogue scales, sliding cursor (white body)
Display size
5"
Programming
Other
Dimensions
7.5" long
Overview
Model N 3-ES
Type
Slide Rule
Manufacturer
Pickett
Introduced
1960
Discontinued
1975
Predecessor
Model 3
Cost
$26.95
Calculator
Precision
3 to 4 significant digits
Display type
Analogue scales, sliding cursor (yellow body)
Display size
10"
Programming
Other
Dimensions
12" long
The Model N 3 series of slide rules are a set of high end engineering rules that represent the height of Pickett's production. They boast the second greatest number of scales for any of Pickett's offerings at 32 total scales, second only to the N 4 vector rule's 34. The N 3 is composed of an aluminum body and slide, with a nylon and plastic cursor, which is unusual for most slide rules, but allowed Pickett rules to have a very clear, very precise face which is easy to read.
Colors
Pickett models after the introduction their "N" family represented a transition between preferred colors, with most "N" rules coming in both original white (denoted by a suffix "T") and their patented "Eye Saver" yellow (denoted ES). Functionally, the only difference between the models was their variation in color, and all significant components remained functionally identical.