Both _Bottom_ and _Side-Ledge_, is a thin piece of _Brass_, from a _Scaboard_ to a _Pica_ thick, according as the _Body_ whose _Face_ and _Foot-line_ is to be _Justified_ in it is bigger or less. These two _Ledges_ is an Inside Square exactly wrought, and with small _Rivets_ fastned on the _Side_ edge, and on the _Bottom_ edge. The _Stilt_ is a thin flat piece of _Brass-Plate_ about a _Scaboard_ thick, and a _Double-Pica_ broad: One of its edges is _Soldered_ to the under-side of the _Plain_, about a _Double-Pica_ within the fore-edge of the _Plain_, that the _Lining-Stick_ (when set by with _Proof-Letters_ in it) may not lie flat on its _Bottom_; but have its fore edge _Tilted_ up, that the _Letters_ in it may rest against the _Bottom-Ledge_. Having cut the _Notch_ in the _Break_ of the _Letters_ as aforesaid, He _Rubs_ every side of them on the _Stone_, with two or three hard _Rubs_, to take off the small _Rags_ that may happen on the _Shanck_ of the _Letter_, notwithstanding the _Mold_ is imagined to be very truly made and _Justified_. The _Stone_ is commonly a whole _Grind-Stone_, about eighteen Inches diameter, having both its sides truly _Rub’d_ flat and smooth, by _Jostling_ it (as _Masons_ call it) upon another broad long and flat Stone with _Sand_ and _Water_. It must have a fine, but very sharp _Greet_. Now to return. He places a Quadrat of the same _Body_, on the _Plain_ of the _Lining-stick_, and against the _Side-Ledge_ of it He sets up three or four old m’s of the same _Body_: Then sets up his _Proof-Letter_ or _Letters_, and after his _Proof-Letter_ three or four old m’s more of the same _Body_; and being very careful that the _Foot_ of the _Shanck_ of the Letter stands full down against the _Bottom-Ledge_ of the _Lining-stick_, He applies the edge of the _Liner_ to the _Faces_ of all these Letters: And if he finds that the edge of the _Liner_ just touch (and no more) as well all the parts of his _Proof-Letters_ as they do upon his old _Letters_, He concludes his _Matrice_ is _Sunk_ to a true _Height against Paper_. But he seldom hopes for so good luck; but does more likely expect the _Matrice_ is _Sunk_ too deep or too shallow, and awry on the right and left-side, or on the top or bottom of the _Line_, for all or any of these Faults the _Liner_ will easily discover. Therefore I shall shew you how he _Justifies_ a _Matrice_ that is too _High against Paper_.