Slide Rule Chart PICK WATER HEATERS, To Find Steam Requirements for Heating Water Properties of Sat. Steam, Lbs. Steam Per Hour, Gallons Per Minute Measures 9 x 3.5 Composed of Imprinted Card Stock Paper on PopScreen

Slide Rule Chart PICK WATER HEATERS, To Find Steam Requirements for Heating Water Properties of Sat. Steam, Lbs. Steam Per Hour, Gallons Per Minute Measures 9 x 3.5 Composed of Imprinted Card Stock Paper

Slide Rule Chart PICK WATER HEATERS, To Find Steam Requirements for Heating Water Properties of Sat. Steam, Lbs. Steam Per Hour, Gallons Per Minute Measures 9 x 3.5 Composed of Imprinted Card Stock Paper

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$Slide Rule Vintage Aristo Multilog 970 Engineering Math Science German$

$Slide Rule Vintage Aristo Multilog 970 Engineering Math Science German$

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