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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
MEEM
Description
An account of the resource
Historic scientific instruments held by the Department of Mechanical Engineering and Engineering Mechanics, Michigan Technological University, Houghton, MI, USA.
Physical Object
Use this field for any solid object.
Physical Dimensions
The actual physical size of the original image
Minimum: 152.4mm X 38.1mm X 7.9mm
Maximum Extended: 279.4mm X 38.1mm X 7.9mm
Materials
Aluminum, Plastic
Maker
Pickett & Eckel  Chicago, Illinois, US
Inscriptions
MODEL  N600ES  LOG LOG  SPEED RULE  PICKETT  MADE IN USA  PICKETT  ALL METAL  SLIDE RULES  PICKETT & ECKEL.  INC.  CHICAGO, ILL  © 1962
Scale Label Inscription in Order (Description, Function, Range)
LL1 (Log Log, e0.01x, greater than 1: 1.011.15 and less than 1: descending 0.990.91, Logarithmic) 
A (Scale of squares, x2, two repeated 110 scales, Logarithmic) 
B (Scale of Squares, x2, two repeated 110 scales, Logarithmic) 
ST (Scale of sines and tangents, sin(x) tan(x), 0.65.5, Logarithmic) 
T (Scale of tangents and cotangents, tan(x) cot(x), 645 ascending and 8445 descending, Logarithmic) 
S (Scale of sines and cosines, sin(x) cos(x), 5.890 ascending and 2084 descending, Logarithmic) 
C (Fundamental Slide Rule Scale, x, 110, Logarithmic) 
D (Fundamental Slide Rule Scale, x, 110, Logarithmic) 
DI (Reciprocal D scale, 1/x, descending 110, Logarithmic) 
K (Scale of cubes, x3, three repeated 110 scales, Logarithmic) 
LL2 (Log Log, e0.1x, greater than 1: 1.11e and less than 1: descending 0.900.40, Logarithmic) 
DF (Folded D scale, x*pi, pi10 then 1pi, Logarithmic) 
CF (Folded C scale, x*pi, pi10 then 1pi, Logarithmic) 
Ln (Natural log scale, ln(x), 02.3, Linear) 
L (Log scale, log(x), 110, Linear) 
CI (Reciprocal C scale, 1/x, descending 110, Logarithmic) 
C (Repeated) 
D (Repeated) 
LL3 (Log Log, ex, greater than 1: e20M and less than 1: descending 0.370.0001, Logarithmic)
History of the Object
Slides rules were used in math intensive engineering courses to perform calculations. Slides rules were eventually replaced by calculators and are now mostly obsolete.
Location
The location of the interview
MEEM, Third floor display case, 3rd case from the right, 2nd shelf
Bibliography
MacKenzie, D. Scott. “Illustrated SelfGuided Course On How To Use The Slide Rule.” Sliderulermuseum. November 18, 2019. https://www.sliderulemuseum.com/SR_Course.htm
Marcotte, Eric. “Types of Slide Rules and their Scales.” Sliderule. November 18, 2019. https://www.sliderule.ca/scales.htm
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Pickett Model N600ES Log Log Speed Rule
Subject
The topic of the resource
Engineering; Mechanical Engineering; Mathematics
Description
An account of the resource
Physical Description:
The Pickett Model N600ES Log Log slide rule is constructed using three yellow painted aluminum bars. The “ES” in the model name means “EyeSaver” and refers to the yellow painted construction. The two outer bars are called the stators and are attached by a brace on both ends. The braces create a gap between the two stators where the third aluminum bar, called the slide, fits into the grooves between the two stators. A clear plastic cursor slides along the outside of the stators. The cursor has a vertical hairline marker on both sides of the slide rule for lining up the scales between the slide and stators. The upper stator has LL1 and A scales on the front side and LL2 and DF scales on the backside. The lower stator has D, DI, and K scales on the front side and D and LL3 scales on the backside. The slide has B, ST, T, S, and C scales on the front side and CF, Ln, L, CI, and C scales on the backside. The scales are usually logarithmic with a few exceptions such as the L and Ln scale which are log operations with a linear scale. The index of a scale is the furthest left number for the left index or the furthest right number for the right index. The scale ranges and operations are described under inscriptions.
Functional Description:
The Pickett Model N600ES Log Log slide rule is a duplex slide rule. A duplex slide rule has scales on both sides of the slide rule and a dualfaced cursor. The dualfaced cursor allows for relating one side of the scale to the other side for a greater number of calculations. Logarithmic scales have a multiplication and division property discovered by William Oughtred in 1630 that allow for the operations of multiplication and division instead of addition and subtraction of linear scales. Multiplication is the simplest operation on a slide rule using the two fundamental scales, C and D. To multiply two numbers, x and y, the left index of C is positioned over x on the D scale. Then the cursor is position over y on the C scale. The value of the cursor on the D scale is the solution to x multiplied by y. The decimal place may need to be adjusted to get the correct order of magnitude since the C and D scale has values ranging from 1 to 10. The other scales are used to perform different operations such as squares, reciprocals, exponentials, and sines, cosines, and tangents.
Creator
An entity primarily responsible for making the resource
Gideon Hoekstra, Nick Renke, Donovan Doran, Erik Madson
Date
A point or period of time associated with an event in the lifecycle of the resource
1962
Language
A language of the resource
English
20C
20th Century
Eckel
Engineering
Mathematics
Mechanical Engineering
Pickett
Scale
Slide
Slide Rule