Oil-Rite Corporation > Liquid Level Gages > Broad Face Nylon Gages > Broad Face Nylon Gages with Dial Thermometers > With 3" to 12" Centerlines > Item # B3950-20500BB1W  

Item # B3950-20500BB1W, Broad Face Nylon Liquid Level Gage with Dial Thermometer, 5" Centerline, Back Mount 1/2"-20 with Nuts

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Broad Face Nylon Liquid Level Gages with Dial Thermometers feature a large dial thermometer and wide rectangular sight, allowing liquid level, clarity and temperature to be easily viewed from a distance.  These Gages can be used on machinery oil reservoirs, tanks, gearboxes, bearing housings, crankcases, hydraulic equipment, transformers and other applications requiring visual indication of both liquid level and liquid temperature.


This Liquid Level Gage has a clear, durable nylon sight that is rectangular in shape.  The front viewing area is 1 3/4” wide.  A 1/8” wide red line on the back of the sight enhances liquid level visibility.  Easy-to-read “High” and “Low” level markings provide additional visual cues.  Two aluminum tie rods run through the center of the sight connecting the aluminum end blocks.  Leak-proof construction is achieved with Buna-N seals.  Temperature is indicated in both degrees Fahrenheit and Celsius on the 2 3/64” diameter stainless steel thermometer.  It displays 0 ° F (-20° C) to 250° F (120° C).  The unit tolerates up to 50 PSI and 205° F. 


Fluid enters through the cross hole in the hollow lower bolt.  The gage is vented into the tank through the cross hole in the top bolt.  The length between the center of the two bolts is referred to as the centerline.  The distance between the center of the tank holes must be within 1/32” of the centerline measurement.  This gage is mounted to the tank with (2) 1/2”-20 aluminum bolts.  The back mount design requires that the inside of the tank be accessible in order to secure the bolts with plated steel hex nuts.  Torque to 90 in-lbs.


For additional mounting options, seals and fractional inch centerline distances, reference the “Other Options” document located on this page. 






1/2"-20 with Nuts


Dial Thermometer

Max Pressure

50 PSI

Max Temperature

205° F



Sight Material

Broad Face Nylon


B3950-2 Other Options
(PDF, 316KB)

 This Item is Compliant 


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