70 SEC. 3. MEASUREMENT. 



These consist of a 1 kilogramme weight, a set of weights weighing from 

 1 kilogramme downwards, and a set of standard weights with pin adjustment 

 weighing from 500 grammes downwards, 



362a. Box of Weights, containing two kilos, and fractions of 

 a kilo. Deleuil, Paris. 



362a. One Case of Weights and Measures. 



Set of weights from 1 kilogramme to 1 milligramme. 



Set of weights from 50 grammes to 1 milligramme. 



Set of weights from 1,000 grains to -j-J-g- grain. 



Set of weights for assaying silver, 1,000=1 gramme, in 



circular ivory box. 

 Sets of weights of rock crystal (one spherical set), from 50 



grammes. 



Set of measures from \ litre down. 

 Sikes' hydrometer, as supplied to the Honourable Board of 



Inland Revenue. 

 Bates' saccharometer, as supplied to the Honourable Board 



of Inland Revenue. 

 Set of petroleometers for testing liquids of 650 to 900 



specific gravity. 



T. Oertling. 



262b. Iridio-Flatinum Standard Kilogram. 



Johnson, Matthey, and Co. 



374. Sets of Weights and single Weights from 1 kilo- 

 gramme, made of rock-crystal ; amongst them some which have 

 been examined and marked with an index error by the Imperial 

 Commission for regulating Standard Weights and Measures at 

 Berlin. Hermann Stern, Oberstein. 



The weights, as well as the measures of quartz or rock-crystal, were 

 many years ago recognised as the best and most correct ; but no one has, up 

 to this time, executed them in such a manner as to afford institutes an op- 

 portunity of procuring them ; which want has now been supplied by the 

 exhibitor. 



The other objects of agate are such as are produced by the Oberstein-Idar 

 grinding and polishing mill, and can be employed in different kinds of 

 machinery. 



387. Set of Pharmaceutical Weights from O'Ol grammes 

 to 200 grammes (19 pieces). 



Kleemann, Mechanical Engineer, Halle. 



D: INSTRUMENTS FOR DETERMINING SPECIFIC GRAVITY. 



347. Tangential Balance for measuring the density of 

 liquids and solids by the angle of inclination, read on a divided 

 circle down to two minutes, thus giving the third decimal of 

 specific gravity j made by Oertling, of London. 



Prof. Carl Wenzel Zenger, Prague. 



