Indicating the Refrigerating Machine : The Application of the Indicator to the Ammonia Compressor and Steam Engine, with Practical Instructions Relating to the Construction and Use of the Indicator and Reading and Computing Indicator Cards

New (perfect condition)

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Like new (excellent condition)

Pages are clean and are not marked by notes, highlighting or folds.

Very good (good condition)

Pages are intact and may have minimal notes and/or highlighting or folds.

Good (clean condition)

All pages and the cover is intact. The spine may show signs of wear. Pages include notes and/or highlighting.

Acceptable (readable condition)

All pages and the cover is intact. Pages include considerable notes in pen or highlighter, but the text is not obscured.