[ it'M ] 
Tower of London. He alfo at the fame time dlre&ed 
Mr. Samuel Ready Scale and Weight-maker near 
Alderfgate , to prepare, in the bed manner he could. 
Two iingle Troy Pound Weights, with Two Piles of 
the fame Weights, decreaftng from Eight Ounces to 
One Quarter of an Ounce refpe&ively, Two Parcels of 
the Idler correfponding Weights, that is to fay, from 
Five Penny-weight to half a Penny- weight, and Grain 
Weights from Six Grains to One-fourth of a Grain ; 
together with Two finglc Avoirdupois Pound W eights : 
All which, when made, were carefully examined, and 
found to agree fufficiently with each other. Things 
being thus provided, the Two brafs Rods, one of the 
Six-inch Scales, and one Set of all the Weights, were 
fent over to Tar is, one of the Rods to be returned, 
and all the other Particulars, to be prefented for their 
Ufe, to the Royal Academy of Sciences there : 
Who, upon Receipt thereof, defired the late Mon- 
Jieur Du Fay> and Abbe Nollet , both Members of the 
Academy, and alfo Fellows of the Royal Society, 
to fee the Meafure of the Raris Half-toife, contain- 
ing Three Raris Feet, accurately fet off upon both 
the brafs Rods, in the like manner as the Length of 
the Englijh Yard, containing three Englifb Feet, had 
already been fet off on the fame: After which, thofe 
Gentlemen returned over one of the Rods to the 
Royal Society, together with a Standard Weight 
of Two Marcs, or Sixteen Raris Ounces, accompanied 
with a Rrocefs Verbal , or Authentic Certificate from 
the proper Office, of the due Examination thereof. 
The Rod being returned, Mr. Graham caufed Mr. 
SiJJ'on to divide both the Meafure of the Englijh Yard, 
and the Paris Half-toife, each into Three equal Parts, 
for 
