GAGE. 
wage law, to wage deliverance, g. d. to give ealy a 
thin fhall be Selivers 
a perfon who has diftrained be fued for ia — de- 
livered piles he had took by diftrefs, he th 
gage, r Ager deliverance ; that Is, put in ene. ui he he 
will ie ey hem 
GAGE am vadium, is that which is left in the 
hands of nial ae fo that he reaps the a thereof : 
in oppofition to vif-cage, vieum vadium, where the fruits or 
revenues are reaped b the bic eae and polos on ie 
foot of the debt, which diminifhes in proportion theret 
The fecond acquits or eee itfelf, and as it fubifts, 
furvives the debt, and is therefore called living pledge ; the 
irft does not. 
Pomey alfo ufes mort-gage for the poffeffion of any effects, 
on condition of furrendering them up at the good pleafure of 
the perfon who gave them. See Morreacs. 
AGE, in evades -yand Joinery, is an seep ae for draw- 
ing a line o of the faces of a {tuff parallel to 
a in cone: to reduce the rad > a foued, or thick. 
oe chief ufe is for gaging of tenons true, td fit into mor- 
tiffes; and for gaging ftuff of an se thicknefs. 
It is made of an oval piece of wood, fitted upon a fquare 
ftick, to flide up and. down itiffly eae and with a tooth 
ae the end of a ftaff, to fcore, to flrike a line upon th 
flaff at any diftance, according to the diltance cf the 
oval from it. 
Gace, in the Sea Language When one fhip is to wind- 
ward of another, the is faid to have the weather gage of her. 
The i 
P 
is done thus: 
They drive a pike, near th ’ and then put 
down this pike by ne rudder, till the nail catch hold under 
or then, as many feet as the pike is under water is the 
fhip’s gage, or 
of box, or o ther 
ey kinds of ihefe gages. See ERY. 
JAGE, In Pneumatics; is of various forts, according to the 
— to which it is applied. S. 
Gace of the Air-pump. The aie ad upon which the 
gage of the air-pump is conftruéted i yery obvious ; we 
fhall here briefly deferibe thofe that are in common ufe, 
and refer to the article Ain-pump for the mode of their ap- 
puication. The “ ae t barometer gage’ is merely the 
r or a tube about eight or nine 
inches in length, fll led with mercury, and immerfed with its 
aperture into a {mall qua ntity of mercury — ina 
glafs-veffel, which forms the ciftern. This 
placed auder the receiver upon the principz . plate of 
pump, or itis placed under a feparate {mall receiver, on 
a fmail auxiliary plate, which is annexed to fome air-pumps 
for this purpofe. As this gage is not equal to whole baro- 
meter, it will not fhew the very {mall degree “of rarefaction ; 
but its indications will commence when about three-quart ers 
of the air been removed from the receiver, that i is, 
when the aig has been rarefied till its dana reel is 
not able to fupport that column of me Chis 
has a feale of inches and parts of an inch sic to the a 
which fhews the precife altitude of the mercury in it 
« Jong barometer gage’’~is a tube of about thirty-three 
inches in length, open at both ends, having its lower end ir - 
nerfed in a ciltern of quickfilver, which is fixed on the 
pedettal, or lower part of the frame of the pump; the tube 
itfelf reaching from that place to. the heap of the plate, 
> 
aq 
oO 
The upper aperture of the tube communicates, by means of 
gia tube, withthe infide of the pump. 
an empty 7 which is filled with quickfilver, by 
withdraving the air from it through its upper aperture 3 
and if the pump eoul proce: -a perfect vacuum, — - 
cury in me long gage would rife as high as it 
commen barometer ; butas the pump cannot exhauft fo £ fary 
therefore the Niece of altitude between the mercury of 
the long ga e, and that ef a common barometer, fhews the 
quantity of air that remains in the receiver. 
of altitude is indicated by a f{eale of inches and parts of 
incl ba which is alw ays affixed to the long barometer gage. 
As the altitude of the mercury in a common barometer 4 is 
to its cotemporaneous altitude in this gage, fo is the whole 
quantity of air which was in the receiver before the rarefac~ 
tion to that quantity which has been drawn out of it. 
66. {yphon-gage”’ iffers from the fhort 
ap ica ; vith pe infide of the pump; fo that 
cena: ing | eg of the tube performs the office of a ciftern s 
hence, in nae the air, the mercury defcends pe a 
clofed end of the tube, and rifes into the afcending leg ; 
confequently the altitude of it in one leg above its Ae 
in the other leg, which is in reality the c iftern, fhews the de- 
gree of rarefaction, and this altitude is deaaced by an an- 
nexed f{cale of inches and parts of inches. 
gages above-mentioned evidently indicate the elafti- 
a8 a the ae wh hs remains in the receiver. re) the pu 
certain degree of i sarcaa an 
sie ae. rue “fluid bas 
other elaftic 
its fhape was cela the «“ i pear-pape”? by its inventor, 
meaton, and which fhews (not at the aCtual time, but 
aiter the re-admiffion ir into the receive ow much 
as lef he receiver in the preceding rarefa€tion. 
"This pear-gage coniifts of a glafs-veffel A ‘a 
ate 
pagers Fg. 4.) whieh — a frall projecting orifice Ey 
t the other end it is extended into a tube clofed 
ee acity of this tube is pa 100dth part of the rete 
eile whole veffel. This gage is fufpended, with its aper~ 
ture downwards, to the lower end of a flip-wire, or a wire 
which paffes through a collar of leather, within a gk Us— 
receiver of the pump, and exaétly under it a {mall cup, con- 
taining quickiilver, is placed upon the plate of the pump. 
When’ the pump has Leen worked to the intended degree, 
the air in the pear-gage is evidently rarched as much asit is. 
in the receiver. In that ftate, by lowering the flip wire, the 
pear-gage is let down tilits aperture 1] B has x reached the eee 
tom of the mercury. is done, the external air is ad 
mitted into the receiver ; but it cannot be admitted into the 
" pear-gage, becaufe the aperture” or tnat gage is Huw im. 
merfed in the quickfilver ; but the preffure of the atmo- 
fphere on the furface of the sticker forces that Pal d into 
th ear-gage, % and fills it up to a certain degree FE. ;, then the 
upper pari D E of the gage will contain. all the air cr vapour. 
which eee the whole cavi ity of the gage during the: 
rarefaction. Annexed to the upper part D EL of the ¢ gage 
is a divided {cale, which fhews ak part of the capacity of 
the whole gage is filled with air, and of courfe it manifefts. 
the degree to which the rarefaction. cf the air had beeim 
carried. E.G. If we find that the part D E of the gage,. 
which is filled Sieh air above the quickfilver, is the coodth 
art of the whole, we may conclude, that the air in the 
receiver had been rarefied sco times, &c. But between. 
the indications of this and of the preceding gages, there. 
wi 
