How to brew good beer : a complete guide to the art of brewing ale, bitter ale, table-ale, brown stout, porter and table beer, to which are added practical instructions for making malt (1864)
Pitt, John, 1945- · London : Longman, Green, Longman, Roberts and Green · leaf 64
of this stem there is fixed a white plate, on which is marked figures or lines successively from one to fifty. The latter number is nearest the large bulb, and the former near the top of the stem next to the letter W, which indicates the gravity of water. The saccharometer is sold in a tin FH tube… … purpose.
Brewing · Beer · Malt
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.