2010/1/393 Slide rule, Grains Rule, single-sided, open frame, wood / brass, made by Dring & Fage, London, England, c. 1903-1938

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Dring & Fage grains rule, 1898 - 1943

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Statement of significance

Over the 19th and much of the 20th centuries the slide rule was the primary instrument for calculation used by many people engaged in the trades and in engineering. Although originally invented in the 17th century, and widely used for gauging (or estimating the quantities of certain products such as alcoholic spirits) it took until around 1850 for the slide rule to become generally popular. However for those engaged in estimating (ie, gauging) various quantities of goods in use in the liquor, building and agriculture trades numerous kinds of sliding rules with useful scales were developed.

This is a type of gauging rule used to estimate the percentage excess or deficit in volume for Gallons, Bushels and Quarters of grain. There are 8 gallons in a bushel and 8 bushels in a quarter. It is an example of the range of gauging and other specialist slide rules made by Dring & Fage in the 19th and early 20th century.

Production notes

The slide rule was made by Dring & Fage in London between 1903 and 1938.

This text content licensed under CC BY-NC.

Description

Slide rule, Grains Rule, single-sided, open frame, wood / brass, made by Dring & Fage, London, England, c. 1903-1938

Slide rule, Dring and Fage Grains Rule, single-sided, open frame, wood, brass straps, special purpose

Scales are marked:
Obverse:
Stock upper: Bushels | Quarters | Quantity Entered
Slide upper: Gallons | Bushels | Quarters | Excess or Deficit
Slide lower: Percentage
Stock lower: Index Mark (with asterisk)

Small white sticker on reverse.

Made: Dring and Fage; London, England; 1898 - 1943

Marks

Manufacturer information on slide rule obverse, printed in black ink 'REG'D GRAINS RULE DRING&FAGE MAKERS 56 STAMFORD ST LONDON TRADE MARK'

Name and numbers on sticker on slide rule reverse, handwritten in black pen 'Bromley / 1985-110'

Registration number

2010/1/393

Production date

1898 - 1943

Height

6 mm

Depth

34 mm

This text content licensed under CC BY-SA.

Acquisition credit line

Donated in memory of Associate Professor Allan Bromley through the Australian Government's Cultural Gifts Program, 2010

Subjects

+ Mathematics
+ Measurement

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{{cite web |url=http://from.ph/379392 |title=Dring & Fage grains rule |author=Powerhouse Museum |accessdate=23 February 2012 |publisher=Powerhouse Museum, Australia}}

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