Gr.-duc. Standardizing Institute for Glass Instruments. Ilmenau (Thur.). 151 



2. 11 Hydrometers for determining 1 the specific weight of sul- 

 phuric acid, with range of scale of 10 units of the 2nd decimal, 

 divided into units and half units of the 3rd decimal. 

 Beside these the Institute is exhibiting a collection of Glass 

 Instruments and Apparatus, which have been entrusted to its care 

 by the subjoined firms. The data respecting the business capacity 

 of these firms have been supplied by their respective representatives. 



I. Alexander Kuchler & Sohne, Ilmenau (Thuringia). 



Makers of Glass Instruments of great accuracy. 



Specialities: 



a) Thermometers of the highest degree of accuracy for scientific and 

 technical purposes, with or without certificates from the Govern- 

 ment Testing Institutes at Charlottenburgh and Ilmenau; 



b) Hydrometers for all purposes: accurately adjusted according to 

 the standards of the Government Testing Institutes, also with official 

 certificates ; 



c) Graduated Measuring Instruments of all kinds, Warranted, also 

 with official certificates. 



The following samples are exhibited: 



1. Syphon and Cistern Barometers; 



2. Various Maximum and Minimum Thermometers for dwelling 

 houses and windows, Contact Thermometers, Bath and Brewer's 

 Thermometers ; 



3. Standard, Chemical and Clinical Thermometers; 



4. Hydrometers of various kinds; 



5. Geissler's and Crookes's Apparatus, various kinds and designs. 



Those exhibits which bear the mark | K | are accom- 



panied by official certificates of the Institutes of Char- 

 lottenburgh and Ilmenau. 



After the close of the exhibition all the instruments are to be sold at a 

 high discount. Please to address the manufacturers, Messrs. Alexander Kuchler & 

 Sohne, Ilmenau (TJmringia, Germany). 



II. Alt, Eberhardt & Jaeger. 



Thuringian Glass Instrument Works with Branch Works of 

 Keiner, Schramm & Co. in Arlesberg nr. Elgersburg (Thuringia) 

 and Glass Works in Schildhorst nr. Kreiensen. 



This firm was founded in 1873 and has since made steady 

 progress (last year's turn -over: M. 750000). It employs altogether 

 about 450 hands and possesses in Ilmenau new work- shops provided 

 with excellent accommodations and fitted with the best machines. It 

 obtained several awards in exhibitions. The firm maintains a large 



