They are the same as those used by assayers in their ordinary furnaces.
Every assayers pennyweight was nominally divided into 24 gr., and hence gave 288 fine grains, or reports, for silver.
You see we assayers have to take the word of the miners as to where the ore comes from.
Not only potters, but also the assayers themselves, make scorifiers and triangular crucibles.
In this place I ought not to omit mention of another method of assaying employed by some assayers.
Out of the return of the twenty assayers of the different smelters, probably not a half per cent.
For the assaying a capital laboratory of several rooms is provided, where two assayers and two chemists are continually busy.
Twas even reported that they took a sample of the right stuff to the assayers office.
Such experiments are often made by assayers, but seldom recorded.
Most assayers, however, using a micrometer in this way, would like to know its absolute value.