G615 Series Front Mount Redline Sight Gage - Front Viewing With Dial Thermometer

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The G615 Series front mount closed circuit sight gages provide front viewing of the fluid level clearly delineated by a redline on white background integral to the glass sight all secured within an aluminum body. HIGH-LOW markings are stamped into the aluminum body and a wetted dial thermometer provides direct reading of the fluid temperature.

Standard Features:

  • Centerline lengths from 3 to 12 inches
  • Front mount
  • .90 inch SQ body machined from extruded aluminum bar stock
  • Fluid level visible from front of gage (.50 inches wide)
  • Viewing enhanced by redline on white background integral to sight glass
  • HIGH-LOW markings on aluminum body
  • 1.38 inch diameter dual scale dial thermometer, 50° to 300°F and 10° to 150°C
  • 1/2-20UNF mounting studs accommodate reservoir wall thicknesses up to .62 inches
  • Suitable for use with most hydraulic and machine lubricating oils

Standard Materials:

  • Aluminum construction
  • Buna N seals
  • Borosilicate glass sight
  • Zinc plated, steel hex nuts


  • Not recommended for use with steam, acidic fluids, caustic fluids and volatile fluids.
  • If aluminum construction is selected for a water application, anodizing is recommended.
  • Reservoir must be drained to remove dial thermometer or loss of fluid will occur.

Product Options

Common Modifications Available

  • Body Material: Brass, Stainless Steel or Carbon Steel
  • Seal Material: Butyl, Fluorocarbon (Viton®), Ethylene Propylene (EPDM) or Neoprene
  • Centerline lengths

Custom Modifications Available

  • Sight Options: Polycarbonate or Clear Borosilicate (Ball Float Indicator)
  • Surface Treatments: Clear/Color Anodize, Zinc, Nickel or Chrome Plate
  • Fluid Level Markings: Custom Text, ISO Symbols or No Markings
  • Mounting Bolt Threads: 1/2-13UNC, M12x1.75 or M10x1.50
  • Viewing Direction: Right, Left, Front or Any Combination, Corner Viewing
  • Backup conical sleeve (for use with cylindrical reservoir)

Minimum quantities may apply.


CAD Files


LDI - Corporate  Click for map LDI   Click for map
Precision Machining & Assembly Fabrication & Assembly
1864 Nagle Ave. 12901 Jim Dhamer Dr.
Manitowoc, WI  54220 Huntley, IL  60142
PH: 920.682.6877     
FAX: 920.684.7210    



Our talented team of degreed and professionally certified Engineers, Quality Assurance, Production and Customer Service staff have many years of experience in the industry.  Their attention to details and ability to collaborate with our clients to solve their problems is reflected in the 50+ years we have been in business.


Customer Service: 

920.682.6877, option 4

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