_First_, There may be fitted to the _Ansa_ (or Checks of the Ballance) an Arch (of a Circle) divided into 15. or 20. deg. (more or less, according to the goodness of the Ballance) that the Cock resting over against these Divisions, may readily {236} and without Calculation shew the quantity of the Angle, by which, when the scales propend either way, the Cock declines from the Perpendicular, and the beam from its Horizontall parallelism. _Secondly_, Those, that will be so curious, may, instead of the Ordinary Counterpoise (of Brass) employ one of Gold, or at least of Lead, whereof the _latter_ being of equal weight with Brass, is much less in Bulk, and the _former_ amounts not to half its bigness. _Thirdly_, These parts of the Ballance, that may be made of Copper or Brass, without any prejudice to the exactness, will, by being made of one of those Mettals, be less subject, than Steel, (which yet, if well hardned and polish'd, may last good a great while) to rust with long standing. _Fourthly_, Instead of the scales, the Buble may be hung at one end of the Beam, and only a Counterpoise to it at the other, that the Beam may not be burthen'd with unnecessary weight. _Fifthly_, The whole instrument, if placed in a small Frame, like a square Lanthorn with Glass-windows, and a hole at the top for the Commerce of the internal and external Air, will be more free from dust, and irregular agitations; to the latter of which, it will otherwise be sometimes incident. _Sixthly_, This instrument being accommodated with a light Wheele and an Index (such as have been applyed by the excellent Dr. _Chr. Wren_ to open Weather glasses, and by the ingenious Mr. _Hook_ to _Baroscopes_) may be made to shew much more minute variations, than otherwise. _Seventhly_, And the length of the Beam, and exquisitness of the Ballance, may easily, _without_ any of the foregoing helps (and much more _with_ them) make the instrument far exacter, than any of those, I was reduced to employ. And to these Accommodations divers others may be suggested by a farther consideration of the nature of the thing, and a longer practice. Though in some respects this _Statical_ Baroscope be inferior to the _Mercurial_; yet in others it has its own advantages and conveniencies above it.