Grace's Guide To British Industrial History

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Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 150,668 pages of information and 235,204 images on early companies, their products and the people who designed and built them.

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.

1851 Great Exhibition: Official Catalogue: Class X.: Ludwig Obertling

From Graces Guide

334. OERTLING, LUDWIG, 13 Store Street, Bedford Square — Manufacturer.

Balance, to carry 1/2 cwt. in each pan, and turn when loaded with 3/10 of a grain.

Chemical balance, to carry 1 lb. in each pan, and turn when loaded with 1/200 of a grain.

Balance to carry 1,000 grains in each pan, and turn when loaded with 1/1000th of a grain.

In the two latter, the knife-edges are made of agate, and the suspending pieces for the pans are provided with agate planes.

[The sensibility of these balances may be expressed by saying, that the first turns with about the 1,300,000th part of the weight which it can weigh; the second with the 1,400,000th part; and the third with the 1,000,000th part. The value of such balances is perceived in delicate chemical analyses, in which a fractional error has often led to important mistakes.—R. E.]


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