The present example was made by Jan (or his brother Jacobus) van Wyk (also Wijk), recorded by Rooseboom and by the Websters as maker of octants and surveying instruments, flourishing c. The Boerhaave, and the Utrecht University Museum, each has examples of physics demonstration apparatus by van Wyk. The long thermometer permits temperature corrections. According to Middleton (The History of the Barometer, pp.
And Mrzer Bruyns, in his 2003 thesis on the octant, records seven surviving van Wyk octants (and see Tesseract Catalogue 29 Item 32). GOLDSCHMID-FORM POCKET BAROMETER, Swiss, late 19th century, signed "Th. 1856." This beautifully constructed aneroid barometer is contained in a shaped pebbled-leather covered doubly-hinged case, and consists of a 1-7/8" (19 mm) diameter lacquered brass drum with twin index arms reading against a 400 - 800 scale, readout magnifier, and rotating top with inset circular thermometer and silvered cylindrical scale divided every half unit from 0 to 50. 418 - 420) "It was a remarkable first attempt at a null instrument of this sort...." (8280) 50.
Authentically forged Viking era axes made in Oakland, California.
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After some time in Loisville, the decision was made to pack up shop and move the business to Alexandria, Indiana in 1896.
In 2014, she was re-examining the objects dug out of the site when she identified a possible polished axe fragment and approached Professor Peter Hiscock of the University of Sydney to help verify the find.
The axe fragment was found in the same layer of sediment as a charcoal sample that was radiocarbon dated to 48,875-43,941 years old.
In late April, a sensational discovery was made in a field in the village of Hegra, not far from the Trondheim International Airport in Værnes.
Numerous axe heads, a knife blade and some fragments were lifted out of obscurity.