Philadelphia Instruments and Controls, Inc. - Specializes in the production of temperature related products.

Philadelphia Instruments & Controls Inc.
4401 North Sixth Street
Philadelphia, PA 19140
USA

(215) 329-8828 voice
(215) 329-0729 fax

Toll Free
(800) 863-9351 voice
(800) 245-1782 fax

Did you know?
The advances in thermometry in the first half of the eighteenth century included the significant work of Guillaume Amontons (d. 1705) on gases. He studied the expansion of gases on heating but did not achieve formulation of Charles' Law. He developed the air thermometer, which measures the increase in pressure of a system of constant volume when the temperature increases, and also made significant studies of the liquid-in-glass thermometer. The liquids used in a thermometer by Amontons, and still used today, are alcohol (with red dye in it, used at low temperatures), linseed oil (for higher temperatures), water, and mercury.