Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,689 pages of information and 247,075 images on early companies, their products and the people who designed and built them.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.
670A. EVANS, SPARKE, Hungerford, Berks — Inventor.
Self-acting instrument, for easily determining the strength of oak bark, valonia, cutch, divi divi, and other tanning materials.
Instrument for determining the heat of newly-made hay-ricks; and when ventilation, or turning over, to prevent firing, are required.
Grace's Guide web site design is Copyright © 2025 by Grace's Guide Ltd. The text of this web site is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy.
MW1.43