The Sikes Hydrometer c1860, (from an original Dring & Fage Sikes User Manual, printed in 1855.) In the original mahogany, maroon and velvet lined fitted case, complete with all parts stamped Dring and Fage. The hydrometer, which is also stamped, is mounted on ivory. Used in near mint condition. The Sikes hydrometer was used to determine the strength of spirits for the distiller, victualler and ta x collector alike, and worts both before and after fermentation for the brewer, providing an accurate method of determining alcohol proof, strength, percentages and duties thereof. It was also required that brewers notify the ta x exciseman of times when the first wort would be ready for measure.