1920 Article Portable Coalometer Coal Pile Leakage Instrument A. W. Browne SCA3
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This is an original 1920 one-page article (one single-sided page), "Detecting and Preventing Leakage in the Soft-Coal Pile" by R. P. Nichols featuring an image of the details and installation of the Coalometer, an instrument developed from a joint intervention of Mr. A. W. Browne, Professor of Chemistry at Cornell University, and one of the America's leading scientists. This instrument detects heat losses in the soft-coal pile.
This 91+ year old Item is rated Near Mint / Very Fine+. No creases. No natural defects. No surface rub. No tears. No water damage.
Product Type: Original Print Article; Black / White
Grade: Near Mint / Very Fine+
Dimensions: Approximately 10.25 x 12.75 inches; 26 x 32 cm
Authentication: Serial-Numbered Certificate of Authenticity w/ Full Provenance
Protection: Packaged in a custom archival sleeve with an acid-free black board (great for display, gift-giving, and preservation)