5½" Scale Submarine Thermometers - Philadelphia Instruments and Controls, Inc. - Specializes in the production of temperature related products.

5½" Scale Submarine Thermometers

Separable Socket Connection
Bronze Case Submarine thermometers. These small size instruments are used extensively on board ship, for diesel and turbine engines, compressors, oil lines, etc. Brass, Steel, Monel and Stainless steel sockets available. ½" - ¾" or combination ¾" and ½" N.P.T. Sockets are made to Navy specs.

Dual Scale
30° F to 240° F 5° Division
0° C to 116° C 2° Division

Longer Stems are available upon request

Available Temperature Ranges
60° F to 100° F 2° Division
-40° F to 110° F 2° Division
20° F to 180° F 2° Division
30° F to 240° F 5° Division
50° F to 400° F 5° Division
0° F to 115° C 1° Division
0° F to 120° C 2° Division

Same accurate thermometer as above except separable socket is secured on to stem of thermometer by a set screw. Lens front red reading mercury tube. Offered in straight and back angle pattern only.

Ranges -40° F to 110° F, 30° F to 240° F. Brass or steel separable sockets either ½" or ¾" N.P.T.
Extension neck sockets also available.

#540 Straight form
#541 Back angle

Did you know?
In making a liquid thermometer, the mercury is ordinarily driven to the top of the tube by heating. The glass is then sealed off, resulting in a vacuum when the mercury contracts during cooling. For high-temperature applications the tube is filled with a pressurized gas before sealing to prevent the mercury from boiling. Colored alcohol or other fluids are used for recording temperatures below the freezing point of mercury, which is -37.97°F (-38.87°C).