THE INDICATOR HANDBOOK.

Comprising “The Indicator: Its Construction and Application” and “The

Indicator Diagram: Its Analysis and Calculation.” Complete in One

Volume.

7s. 10d. Post Free.

“Mr. Pickworth’s judgment is always sound, and is evidently derived from

a personal acquaintance with indicator work.”—_The Engineer._

POWER COMPUTER FOR STEAM, GAS AND OIL ENGINES, Etc.

“Accurate, expeditious and thoroughly practical.... We can confidently

recommend it, and engineers will find it a great boon in undertaking

tests, etc.”—_The Electrician._

7s. 6d. Post Free.

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