$1,330.00 - $1,560.00
    warranty 1 year
    Product Description
    Western Instruments N88-9 Bridging Pit Depth Gauge, Measures Corrosion and Material Loss
    Measuring Range: 0.0-0.5" (0.0 - 12.7 mm)
    Resolution: 0.001" (0.01 mm)
    Dial Diameter: 1.4" (35.5 mm)
    The Bridging Pit Gauge® can be assemble up to a length of 28.5" (724 mm) long; can be extended if necessary
    Available with dial or digital indicators

    The Western Instruments N88-9 Bridging Pit Depth Gauge allows the Corrosion Inspector to Span over or Cantilever into Large Areas of Weight Loss Corrosion, to obtain accurate and consistent measurements, or cross sections, of Pit Depth. As conditions dictate, the operator can simply use the Main Blade or can assemble the Bridging Pit Gauge® up to an over all length of 28½” (725mm).

    The contact Surfaces (Blades) of the Bridging Pit Gauge® are fitted with an exclusive Knife Edge, so they can be used on Flat, ID (Convex), and OD (Concave) Surfaces, where a flat or notched contact surface can introduces error on Convex Surfaces. Like our Standard Pit Gauges, the Knife Edge gives the operator a clear view of the contact point, and the area being inspected.

    With the addition of the Magnetic Hold Downs, the operator uses their width to quickly align the Bridging Pit Gauge System® to a curved surface. This leaves his hands free to scan through very large areas of weight loss corrosion. This holds true when the Bridge Elements have been assembled with a slight contour on an irregular surface.

    Kit Contents


    • N88-9 Bridging Pit Gauge Indicator (Inch, Metric or Digital)
    • N88-9-1 Main Blade - Center and End Dial Indicator Mounting Positions, Fitted Permanent Magnets. Cutaway Nose for next to welds. 5.5” (144mm) long.
    • N88-9-2 Connector Blade - Joins Tee Sections to increase length. 3.5" (90mm) long.
    • N88-9-3 End Blade - Mounts on end of Tee for extra contact. 1.5” (38mm) long
    • N88-9-4 Slider Blade - Extra Point of Contact and doubles as an End Blade in Spanning Configuration. 1.5“ (38mm) long.
    • N88-9-5 Extender Tees - Extends effective length of all models. 12” (305mm) long (Longer Tees are optional) - 2 (two)
    • N88-9-6P Magnetic Hold Down Block- 2 (two)
    • N88-9-7 Fastener Kit (Hardware) - Fasteners, Allen Key, Nylon Thumb Screws, #1 Contact Point-Standard.
    • N88-9-8 Carrying Case - Hard Sided Plastic Carrying Case for entire kit
    • Operator Manual
    Click image to enlarge

    Features


    Zeroing Dial Indicator

    • To quickly check the Zero Point of the Dial indicator, place the Blade on a representative smooth surface.
    • Gently press the Plunger, until the contact point touches the surface.
    • While the contact point is on the surface, loosen the Bezel Lock, and rotate the Bezel Scale until it reads '0' with respect to the pointer.
    Click image to enlarge

    Height Zeroing
    • Loosen the Fastener(s) holding the Dial Indicator in place.
    • Hold the Blade firmly on a Flat Surface, and gently press the body of the Dial Indicator down until the contact point touches the flat surface.
    • Carefully re-tighten the Clamp Fastener(s) or the Set Screw.
    • Any fine zeroing can be done by rotating Bezel Scale on the Indicator.
    • Height Zeroing should be done, whenever the unit is put into to use.
    Click image to enlarge

    Zeroing a Digital Indicator
    • Digital Indicators can be Height Zeroed or Positioned in the same way as a Mechanical Dial Indicator.
    • To Zero the Digital Indicator simply press the Zero Button when the Contact Point is on a reference point. If the Digital Indicator is Height Zeroed, press Zero when the Plunger is fully retracted.
    • To select Metric or Imperial Measurement, simply press the mm/in Button.Whennot in use, press the On/Off Button to turn the Indicator off.
    Click image to enlarge

    Indicator Positioning
    • The position (or rotation) of the Dial indicator can be changed by simply loosening the Clamp Fasteners or Set Screw, and rotate the Dial Indicator about the Blade.
    • After the Dial Indicator is rotated, the unit should be Dial Zeroed.
    Click image to enlarge

    Specifications


    Dial and Digital Indicators

     
    ModelImperial Dial IndicatorMetric Dial IndicatorDigital Indicator
    Range0.0-0.5"0.0-12.7 mm0.0-0.5"
    Resolution0.001"0.01 mm0.0-12.7 mm
    Dial Diam.1.4"35.5 mm56 mm, 2.2"


    lineMeasuring Corrosion (Depth)

     
    Model1-Standard Tip2-Conical Tip3-Needle Tip
    Diam.0.040" diam.0.010" diam.0.005" diam.
    Tipe / Part Number:#1 Contact Point-Standard N88-S#2 Contact Point-Conical N88-C#3 Contact Point-Needle N88-N

    * Western offers a variety of Contact Points, which are all 0.625" (16mm) long. Any ADG Contact point can be used with our special dial indicators, but a different length may affect Height Zeroing, or the vertical position of the Dial Indicator. Contact Points are easily replaced, by extending the Contact Point , and turning it counter clockwise.

    Related Products


    N88-9B
    Basic Bridging Pit Gauge

    • Bridge Type Pit Gauges - Metric, Imperial or Digital Indicator Options
    related
    Click image for more info
    N88-11
    Jr. Bridging Pit Gauges

    • Manufacturer: Western Instruments
    related
    Click image for more info
    N88-11B
    Jr. Bridging Pit Gauge Basic

    • Manufacturer: Western Instruments
    related
    Click image for more info
    N88-11P
    Jr. Bridging Pit Gauge Plus
    • Manufacturer: Western Instruments
    related
    Click image for more info
    N88-11S
    Jr. Bridging Pit Gauge Super

    • Jr. Bridging Pit Gauge Super - up to 27 inches (686 mm) long
    related
    Click image for more info

    Downloads


    Western Instruments N88-9 Bridging Pit Gauge - Data Sheet
    Western Instruments N88-9 Bridging Pit Gauge - Kit Content Details

    ADD TO CART THE ITEMS YOU WOULD LIKE TO PURCHASE
    MODELS
    ACCESSORIES
    $702.00
    $594.00
    $108.00
    $115.00
    $244.00
    $108.00
    $27.00
    $115.00
    $21.00
    $21.00
    $61.00
    $75.00
    $122.00
    $142.00
    $284.00
    $189.00
    Copyright © 2025 Abq Industrial