[ io8 ] 
both degrees and time ; to prevent mlfapprehenfion, 
it may be right to remark that the hours XII. XII. 
ought properly to have been placed according to the 
meridian line j they are here placed otherwife, for 
the convenience of better feeing the meridian dif- 
tance flaewn by the vernier j On the upper part of 
the equatorial plate is the plate K ; upon this plate 
K, are fixed the two fupporters MM, which fup- 
port the axis N, under which is faftened the femi- 
circle of declination O, divided into half degrees, 
and has a vernier index fubdividing it to 3 minutes ; 
on the upper part of this axis, is fixed an achromatic 
Telefcope P, which magnifies about 50 times j to the 
eye End of this Telefcope, is applied a final 1 refledting 
fpeculum making an angle of 45° with the axis 
of the telefcope, whereby objedls that are in the 
zenith or any other altitude may be obferved, with- 
out putting the body in any inconvenient pofition ; 
to the under part of the axis N, is faftened a brafs 
arm carrying the weight Q, which counterbalances 
the telefcope, and the brafs work annexed to it; whilft 
the weights RR counterbalance in like manner the 
whole of the inftrument that is moveable on the 
equatorial axis, fo that whatever pofition the inftru^ 
ment is put in, it will there remain, being perfedly 
balanced ; the four motions of this inftrument may, 
when required, be moved extreamly flow, by 
means of the indented edges of the circle and fe- 
micircles, and the fcrews or worms to which the- 
handles are fixed, 'uiz. that for the horizontal mo^ 
tion marked S, called the horizontal handle, that 
marked T the handle of latitude, V the equatorial 
handle, and W the declination handle.. 
I 
To.. 
