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Ainsworth & Sons 1905 Mining Reporter
Ainsworth Assay Balance
Ainsworth Assay Balance Marking
Ainsworth Assay Balance Workings
Ainsworth Assay Weight Set
  Ainsworth Assay Weight Set Opened.JPG - AINSWORTH & SONS ASSAY WEIGHT SET NO 200 - Ainsworth assay balance weight set, 14 weights and 3 riders, 1 gram to 1 mg, platinum weights with the 5 largest gold plated, circular bakelite case 2 1/2 in. dia., marked on top NO. 200 WM. AINSWORTH & SONS DENVER, COLO, U.S.A., listed in the 1905 Denver Fire Clay catalog of assayers and chemists supplies for $10 while the hard-to-find Ainsworth assay balance set without weights was $70, as new, original and complete, ex-Fred Westlund collection  
Ainsworth Assay Weight Set Closeup
Gold Scale
Herman Kohlbusch May 1902 Engineering and Mining Journal
Kohlbusch Scale I
Kohlbusch Scale II

Ainsworth Assay Weight Set Opened | AINSWORTH & SONS ASSAY WEIGHT SET NO 200 - Ainsworth assay balance weight set, 14 weights and 3 riders, 1 gram to 1 mg, platinum weights with the 5 largest gold plated, circular bakelite case 2 1/2 in. dia., marked on top NO. 200 WM. AINSWORTH & SONS DENVER, COLO, U.S.A., listed in the 1905 Denver Fire Clay catalog of assayers and chemists supplies for $10 while the hard-to-find Ainsworth assay balance set without weights was $70, as new, original and complete, ex-Fred Westlund collection Download Original Image
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