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Canon DSLR Challenge | all galleries >> Challenge 114: Centred Composition... (hosted by Vikas Malhotra) >> Challenge 114: EXHIBITION > Log Log Duplex Decitrig
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25-FEB-2008 Pops

Log Log Duplex Decitrig

Before there was digital....

Copyright 1947 by Keuffel & Esser Co.
Patents 2,500,460 2,168,056 2,170,144, 2,285,722 2,422,649

Canon EOS 30D
2s f/14.0 at 70.0mm iso100 hide exif
Full EXIF Info
Date/Time25-Feb-2008 15:35:07
MakeCanon
ModelCanon EOS 30D
Flash UsedNo
Focal Length70 mm
Exposure Time2.00 sec
Aperturef/14
ISO Equivalent100
Exposure Bias
White Balance
Metering Modeaverage (1)
JPEG Quality
Exposure Programaperture priority (3)
Focus Distance

other sizes: small medium original auto
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Canon DSLR Challenge01-Mar-2008 18:20
Mine, which I inhirited from my father, is in a great shape too (russian made, circa WW2). Cool shot. Sam Attal
Charlie Beck27-Feb-2008 15:32
How did you manage to get a picture of my slide rule? :) No, wait, I'm wrong. Mine is still in the drawer, and I see that mine is fancier than yours (three LL scales, not just one). :) Nice shot, by the way.
Canon DSLR Challenge26-Feb-2008 01:50
You win Pops!.... I dragged my slide rule out of its 40+ year hiding place and it is not as nice as yours? Mine is a F/Castell and has log and reciprocals on one side and Trig ratios on the other but no serial number and copyright 1957? ... so I must only be a 'pup' ;-)

Boy does that bring back memories?

~ Regards Melbob