Francis T. Miles Heat of Vaporization Nomogaph

Country of manufacture: USA,            Date of manufacture: ____
Width of horizontal slide: 34.3 cm,     Height of horizontal slide: 7.0 cm.
Width of vertical slide: 16.8 cm,      Height of vertical slide: 16.8 cm.
Materials: Transparent plastic shell with two plastic slides
Scales: specialized
Condition: C4 (Signs of Minimal use)
Came with: nothing