THE CHROMORADIOMETRE OF DR. H. BORDIER
Stock Number: 9430
$1150.
For sale, the first commercial dosimeter, designed to measure the dosage of radiation by applying a disk to the patient's skin, exposing it to radiation, and comparing the color of the disk with standards along the slot, as a measure of dosage.
Dimensions
$1150.
Circa
c.1910
Country of manufacture
France
Description
THE CHROMORADIOMETRE OF DR. H. BORDIER, French, c. 1910, contained in the original 6-5/8″ x 5-1/8″ (17 x 13 cm) fitted case lined in red silk and red velvet. The device was made by “Maison S. Maury, 7 Quai Claude-Bernard, Lyon,” and consists of a printed card in a glazed gilt metal frame with suspension chain. Six colored paper windows are pasted along a central slot in the card, and a considerable supply of small comparison test disks are included. Condition is very fine and all original.
In use one glues a disk to the patient’s skin or other tissue, irradiates with x-rays, and compares the disk’s color with the standards along the slot, as a measure of dosage. The disks are made of barium platinocyanide, which changes color progressively from green to dark yellow-orange as a result of irradiation.
An early attempt to quantize radiation dosage, this was apparently the first commercial dosimeter.
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Dealer information
TESSERACT
David and Yola Coffeen both have enjoyed academic careers, as planetary astronomer and as linguist/educator. But since 1982 (yes, 1982!) they have been full-time dealers in early scientific and medical instruments, under the name Tesseract. Selling primarily by catalogue (over 100 issued so far) they also have a web presence at www.etesseract.com, and can be contacted at [email protected].
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