45, COBNHILL, B.C., AND 122, REGENT STREET, W., LONDON. 253 



FIG. 867. 



Each. 

 s. d. 



866 Transit Instrument, 14 in., with Telescope having 1| in- aperture 880 

 Ditto ditto 24 in., on portable Iron Stand, with engine divided 



circle, Spirit Levels and Tangent Screw Adjustments . . 27 



867 Ditto ditto 30 in., with Telescope having 2| in. aperture (fig. 867) 50 

 Ditto ditto with two Setting Circles and Brass Stand . . 60 



868 Ditto ditto 36 in 70 



869 Astronomical Clock, dead beat escapement, jewelled pallets, and 



Compensated Pendulum, with steel rod and Mercurial Cistern, 



in Plate Glass Case for hanging on wall 42 



870 Mean and Sidereal Time Clock, showing both times on the 



same dial with dead beat escapement and jewelled pallets, with 

 compensated pendulum and small bell to strike the minutes, in 

 case, with Plate Glass top, sides and front . . . . . 88 



871 Small Equatorial Star Finder, for the use of Students, 4-in divided 



circles, achromatic Telescope, with 1^ in. object glass . . 12 12 



"With this instrument any Star or Planet can be found with facilty, and many 

 important facts in astronomical science demonstrated. 



