To _Justifie_ the _Letter_ in _Line_ he examins the _Proof-Letter_ (yet standing in the _Lining-Stick_) and applies the _Liner_ to the _Foot-line_: And if the _Liner_ touch all the way upon the _Foot-line_ of the _Proof-Letter_ and the _Foot-Line_ of all the old m’s, that _Matrice_ is _Justified_ in _Line_. But this also very rarely happens at first, for by design it is generally made to stand too low in _Line_: Because the _Bottom_ of the _Matrice_ may by several proffers be _Filed_ away till the _Letter_ stand exactly in _Line_. But should he take too much off the _Bottom_ of the _Matrice_, it cannot be made to stand lower without another _Botch_. Nor does he reckon that this first Operation, or perhaps several more such, shall _Justifie_ the _Matrice_ in _Line_. But after bringing both the sides of the _Matrice_ thus near, and also bringing the _Matrice_ thus near the _Line_. He _Casts_ another _Proof-Letter_ or two, and _Rubbing_ all the sides of their _Shancks_, as before was shew’d, he tries by _Rubbing_ the _Letters_ how near he has brought the thickness of both the sides: For when the sides of the _Matrice_ are brought just to such a thickness, that the _Shanck_ of the _Letter_ (_Cast_ in the _Mold_) _Rubs_ flat half way up beyond the _Beard_ towards the _Face_ of the _Letter_, the _Matrice_ is of a convenient thickness, and there the _Angle_ from the _Beard_ of the _Shanck_, to the outer-edge of two _Letters_ set together, will make an _Angle_ of about 10 degrees as aforesaid, which being about one third part of a _thin Space_ is a convenient distance for the adjacent edges of two _Letters_ to stand assunder: But yet _Founders_ sometimes to _Get in_ or _drive-out_, _Cast_ the _Letters_ thinner or thicker, and consequently their _Faces_ stand closer or wider assunder, which is unseemly when the _Letter_ comes to be _Printed_. Then he sets the _Proof-Letters_ in the _Lining-Stick_, between four or five old m’s as before, and with the _Liner_ examins again how well these _Proof-Letters_ stand in _Line_ with the old m’s, which if they do not, he Reiterates the former Operations so oft, till the sides and _Line_ of the _Matrice_ is _Justified_, and at every Operation _Casts_ new _Proof-Letters_ to examine the thickness of both the Sides, and how well the _Matrice_ is _Justified_ to _Stand in Line_. The _Matrice_ being now _Justified_, he Files a _Leather-Groove_ round about it, _viz._ a _Notch_ (made properest with a three square _File_) within about a thick _Scaboard_ of the top of the _Matrice_, to tie the _Leather_ fast to. He also _Files_ another _Notch_ in the back-side of the _Matrice_ athwart it, to rest the point of the _Wyer_ or _Spring_ in. But this _Notch_ must by no means be made before the _Matrice_ be _Justified_ to its true _Height against Paper_: Because when this _Notch_ is made, the _Punch_ cannot again be struck in the _Matrice_; For that the _Matrice_ will not lie solid on the _Stake_ in that place.