File:Typographical slide rule.jpg
Original file (3,462 × 648 pixels, file size: 300 KB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionTypographical slide rule.jpg |
White plastic typographical slide rule. On front rule shows text in different point sizes and reads 'the typographical slide rule is indispensable to all who are engaged in the printing and publishing trades on account of its ability to carry out all types of typographical calculations'. On the reverse there are various measures with a moveable central rule to show different calculations to the printer. Accession Number: SH.2009.399 Slide rules were used extensively in many industries prior to the advent of portable handheld electronic calculating devices. Slide rules provided quick and accurate calculations for sophisticated mathematical problems. This object was used by printers to calculate the size and weight of stock needed for particular jobs in relation to the number of words per page and the spacing and font size. This process was called cast off - the calculation of the extent of a book; the number of pages required to print a text in a certain typeface and point size, done by counting the characters and spaces This slide rule was made by Faber-Castell. A.W Faber were a German company who began making slide rules in 1882, Celluloid covered wooden rules appeared after 1897. The company changed to Faber-Castell in 1906 and continued production of slide rules until 1976. This rule was used at Holmes McDougall. The Holmes McDougall Group were based at Allander House, 137 - 141 Leith Walk. They were primarily educational publishers concerned with the publication of high quality primary and secondary educational books for use in schools both in the UK and abroad. The company slogan was 'The Teachers' Publisher'. The company had a magazine division based in Glasgow which published weekly and monthly titles including the Scottish Farmer, Climber and Rambler, The Great Outdoors, Business Scotland and the Scottish Field. Edinburgh City of Print is a joint project between City of Edinburgh Museums and the Scottish Archive of Print and Publishing History Records (SAPPHIRE). The project aims to catalogue and make accessible the wealth of printing collections held by City of Edinburgh Museums. For more information about the project please visit www.edinburghcityofprint.org. |
Date | |
Source |
|
Author | Edinburgh City of Print |
Licensing
[edit]- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image, originally posted to Flickr, was reviewed on February 20, 2010 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 16:30, 20 February 2010 | 3,462 × 648 (300 KB) | File Upload Bot (Magnus Manske) (talk | contribs) | {{Information |Description=White plastic typographical slide rule. On front rule shows text in different point sizes and reads 'the typographical slide rule is indispensable to all who are engaged in the printing and publishing trades on account of its a |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on de.wikibooks.org
- Usage on fr.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Image title | SONY DSC |
---|---|
Camera manufacturer | SONY |
Camera model | DSLR-A200 |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/4.5 |
ISO speed rating | 400 |
Date and time of data generation | 00:59, 14 January 2010 |
Lens focal length | 24 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop Elements 5.0 (20060914.r.77) Windows |
File change date and time | 12:10, 13 January 2010 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 00:59, 14 January 2010 |
Image compression mode | 8 |
APEX brightness | 2.25 |
APEX exposure bias | 0 |
Maximum land aperture | 4.34 APEX (f/4.5) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 36 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |