Gray scanner with optical density meter on left hand side. Scanner in enclosed case above this. Wooden slide rule and graphing instrument on right hand side, with paper showing graphed 'Human Serum Proteins'. A glass slide with paper sample enclosed in on metal track beneath scanning instrument. A round adjustment knob is located on the front, with a rubber cable to connect to power source.
CH classification SCIENCES
L385 x W228 x H158mm
metal, glass, rubber, paper
Human \ Serum \ Proteins
1 DIVISION = 1/2O INCH
History and use
This scanner was the first of its type in Australia and was built by J.E. O’Hagan in 1952-3 to his own design. This device scanned samples smeared on a paper strip, which had been suspended in a charged liquid solution. A recorder in this scanner traces the optical density and radioactivity intensity of the substance on the strip and plots this for the user to read.
O’Hagan restored the instrument, along with the accompanying equipment, in May 1967. The scanner could not be zeroed but a typical plot of serum proteins was obtained, as you see here.
Uploaded to the Web 27 May 2011.