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Chudnow Museum
Slide Rule
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Object ID 002772

Object Name Slide Rule

Object Desc Wood laquered slide rule made by the Frederick Post Company. Slide rule is the "Sun" model and is labeled HEMMI and MADE IN JAPAN. It is stored in a leather case which is marked "RA Malkingea, Fort Dodge, Iowa" two times in black ink.

Collection General Collection

Accession # CMY002536a-b

Alternate ID

General Category History

Category Business/Office


Source Category Donation

Accession Date OCT 16,2014

Credit/Acknowledgement Tim Kroening

Location Cabinet 1, Shelf 4

Object Date

Start Year Range 1945

End Year Range 1952

Status On-Site Collection Storage

Object Keywords slide rule,Hemmi,Frederick Post Company,mathmatics,

Title Slide Rule

Description Bamboo slide rule made by Frederick Post Company. Slide rule is numbered model 1458. Also marked with "SUN," "HEMMI," and "MADE IN JAPAN." Slide rule made of cream colored laquered bamboo with silver edges and a silver slide. Both sides of slide rule have markings. Slide rule is stored in a leather case which is marked "R A Markingea" and "Fort Dodge, Iowa" in ink on exterior and interior of case.


Approx Collection Date

Height 0.75

Length 12.25

Width 0

Depth 0

Diameter 0

Circumference 0

Weight 0

Unit of Measure Inches/ounces

Dimension Details Above measurements are ruler at its smallest state.

Quantity 1



Site Details

Place of Origin

Maker Frederick Post Company

Maker Details Frederick Post Co., Chicago, founded 1890, was a distributor of US brand slide rules, and other engineering supplies, which were typically relabeled standard products from well-known manufacturers from around the world.

Maker Mark


(click for full image)

Image Caption CMY2536a-b



Date OCT 16,2014

Summary Good

Assessor Molly Hannan

Notes Slide rule is in very good condition. The case is in poor condition, with lots of wear and damage to the leather.