MISCELLANEOUS. 1075 



17. Ordinary telescope Cornet. 



18. Achromatic terrestrial telescope, by Frescura, of Padua, 1872. 



19. Hypsometer from the Tecnomanasio of Milan. 



20. Pantometer from, the Tecuomanasio of Milan. 



21. Studies of the human eye considered as a telescope, made by Professo 



Leguazzi in Padua (1873). 



GROUP II. GRAPHOMETERS, MULTIPLYING CIRCLES, AND THEODOLITES. 



1. Antique graphometer; more than three centuries old; instead of verniers, 



it is furnished with the diagonal scale designed by Don Pedro Nunnez, 

 and gilt with sequin-gold. The tripod is worthy of observation. 



2. English sextant (1798). 



3. Ebony sextant with ivory edge, by Shuttleworth, of London (1840). 



4. Repeating circle, by Lerebours, of Paris (1832). 



5. Reflecting circle, by Baumann, which gives five seconds with telescope 



(1845). 



6. Theodolite of the celebrated mechanician Reichenbach, of Monaco, which 



gives 10 seconds (1828). 



7. Repeating theodolite, by Carlo Starke, constructed in the Imperial and 



Royal Polytechnic Institute of Vienna ; the horizontal circle gives 4", 

 the vertical 10". The bubble has a sensibility of 4" (1852). 



8. Multiplying circle, by Reichenbach, of Monaco ; a remarkable machine 



the circle gives 4" (1832). 



9. Multiplying circle, by Ganibey, of Paris, which gives 3" (1822). 



10. Repeating theodolite of Troughton and Sims, which gives 10": a well 



designed and well constructed machine. 



11. Eccentric theodolite, by Ertel, of Monaco, gives 10"; an excellent and 



most convenient instrument, constructed with great care and elegance 

 (1843). 



12. Multiplying circle, by Lenoir, of Paris ; is an embryo instrument, but 



well designed (1836). 



13. Theodolite by Nairne and Blunt, of London; besides degrees, the hori- 



zontal circle furnishes the tangents of the various angles. With this 

 theodolite the engineer Valle executed the topographical survey of 

 the city of Padua (1828). 



GROUP III. PR.ETORIAN TABLETS. 



1. Steel baud, length 20 meters, with divisions, constructed in the Tec- 



nomanasio of Milan (1870). 



2. Praetorian tablet on the Italian system, constructed by Giuseppe 



Stefani, of the Royal Observatory of Padua (1833). This is- com- 

 pletely mounted to follow the configuration of the ground. 



3. Gnomon, for the rotation of the dioptric. 



4. Dioptric, with pointers and telescope, by Giuseppe Stefani. 



5. Small spherical level from the Tecnomanasio of Milan (1869). 



6. Dioptric, with telescope, by Alemanno, of Turin (1870). 



7. Small level, with bubble of invariable length, designed by Professor 



Legnazzi, and constructed by his pupil Francesco Pasini (1875). 



8. Small common level of the Italian tablet. 



9. Praetorian tablet of' the Italian system by Rochetti, of Padua, without 



the mirror and the accessory instruments in order to show its con- 

 struction. 



10. Small metrical chain of precision, of 10 meters, which was employed 



in the operations of the measurement of the arc of meridian of 

 France (1802-1817). 



