Part IV. Of Mechdnickg. g 69 
A China STATERA, in the form of a Steel-Tar d. The 
Chinefes carry it about them, to weigh their Gems, and 
the like. The Beam or Tard is of Wood, round, ? of an 
inch over, and a foot in length. Upon it are Three Rules 
of Meafure , made of fine Silver-ftudded Work. , as in 
Watch-Cafes. One of the Rules is divided into inches 3 and 
every inch into (25) equal parts. The other Two are alfo 
divided into equal parts 3 but not into inches. They all 
begin from the end of the Beam : whence, the Firft is ex- 
tended (8) inches 5 the Second, 6^3 the Third, 8^. The 
firft, is our Europe-Meafmc 5 the other two, I take to be 
the £/:>/7Ztf-Meafure,and that of fome other Country trading 
with them. 
At the other end of the Tard hangs a round Scale, mark- 
ed with a fquare Seal of Cferf-Characters. At Three feve- 
ral Diftances from this end, are fatten d fo many llender 
firings. The Firft Diftance makes * ths of an inch 5 the 
Second, is double to the Firft, or an inch and * 3 the Third, 
two inches and 
When they weigh any thing, they hold up the Tard by 
fome one of thefe three firings, and fo hang a fealed weight 
(about an Ounce and * Troy-weight) upon fome point of the 
Rule, as the Thing requires. 'Tis kept in a Cafe fitted to it, 
almoft like a J)anci?ig-Mafters Kit. There is one like to this 
in the Mufetum Romanum. (a) U) P. 34» 
A Pair of WOODEN-BELLOWS. Contrived to fave Co1 ' 2 ' 
Leather. Given by Sir Rob. Moray. They may be com- 
pared to a Box 3 faving, that here the Box moves, and ftnkes 
not within, but over the Lid : and both of a fquare Figure. 
The length of the Box from end to end, within, two feet. 
The breadth, at the Breech, a foot and * 5 the depth, about 
a foot. The breadth of the Nofe-end, feven inches and i 
The Breech-Board is bended, fo as to make part of a Zone, 
anfwering to the Lid ( which moves upon an Iron Centre or 
. Axis) as the Radius. 
The Lid hath a Margin placed inward on both fides and 
both ends. From the inner edge, to edge, longways, nine- 
teen inches 3 in breadth, at the Breech, ten inches 3 at the 
Nofe-end, four. The Nofe, of Iron, like that of an ordi- 
nary pair of Bellows. The Valve, of Wood. 
On the middle of the faid Margin,arc two Springs on each 
B b b fide 
