G1.1 Gauge

G1.1 Interior Crack Monitor
G1.1 Interior Crack Monitor
G1.1 Interior Crack Monitor

81,90€ w/o VAT per box 10 units

  • For parallel lip cracks in interiors only
  • Reading the crack with a resolution of 1/10th of a mm.
  • Automatic reading and monitoring of measurements with Saugnac.app
  • Simple fixing with self-adhesives supplied or mechanical fixing with pre-drilled holes
  • Can be fixed at an angle
  • Supplied in boxes of 10 gauges with 1 pen and instructions for use

Made in France

Delivery time and shipping costs
  • Standard shipping in Europe between 48h and 96h (not guaranteed) : from 18,80€ w/o VAT to 29,40€ w/o VAT (Postage paid: 555€ w/o VAT)
  • Express shipping in Europe between 24h and 76h (not guaranteed) : from 76,10€ w/o VAT to 127,90€ w/o VAT
Download detailed documentation
Technical Specifications
Operating Principles
When to Use the G1.1 Gauge
Mounting the G1.1 on Interior Wall Cracks
Measuring an Interior Wall Crack
Accessories & Add-ons

Technical Specifications

  • Resolution
    0.1 mm
  • Measurement axis
    Tracking on a single axis
  • Crack type
    Vertical, horizontal, and corner cracks
  • Usage
    Interior only
  • Mounting
    Adhesive provided or mechanical mounting with screws (sold separately)
  • Adhesive installation conditions
    Installation temperature: 15°C to 25°C (5°C acceptable*). Effective adhesion from 0°C to +90°C
    *Warm the stickers in your hands for a few seconds
  • Dimensions
    160 mm with foldable tab x 40 mm x 3 mm
  • Maximum displacement
    Approximately 20 mm (variation between min and max possible)
  • Weight
    5.8 g
  • Material
    Recyclable cardboard, interior use only
  • Linear expansion coefficient
    7 × 10⁻⁵ m/m/°C

Operating Principles of the G1.1 Gauge

The G1.1 gauge is part of the Saugnac G1 family. All these products are based on the same principles regarding mounting, reading, and monitoring via the Saugnac app.
The G1.1 is specifically and exclusively designed for measuring cracks in interior walls.

When to Use the G1.1 Gauge

The G1.1 gauge can be used for measuring and monitoring:

  • horizontal cracks in interior walls
  • vertical cracks in interior walls
  • cracks in interior corners

Any crack inside a house or other building can be measured easily and accurately with the G1.1.

Mounting the G1.1 on Interior Wall Cracks

Mounting the G1.1 on interior wall cracks follows the same instructions as for the entire G1 family. Detailed information is available in the mounting principle section.

Mounting options:

  • With the provided adhesive strips
  • Or mechanically through the two Ø4 mm holes

Newer G1 versions (from mid-2025) feature a folding groove on the tab, allowing corner mounting without additional accessories.
Older versions include a foldable tab to facilitate mounting in corners.

Measuring an Interior Wall Crack

Measurement is performed with a vernier at 1/10 mm. More information on the reading principle can be found in the product sheet.
The G1.1 also allows automatic measurement using the free Saugnac app.

Each gauge is uniquely identified with an ID and QR code.

The free app allows automatic recording and tracking of measurements at https://saugnac.app. A tracking file is also available for manual monitoring.

Related Products

  • G1 Protection

    G1 high protection anti-UV

    8,50€ w/o VAT

    Protection with anti-UV filter for G1 gauges fixed outside (delivered with impact anchors)

     

  • colle pour fixer les témoins de fissures

    Glue

    17,50€ w/o VAT

    Fast-curing epoxy adhesive in a twin-syringe for reinforced bonding in cases of significant surface roughness or high moisture

  • Mechanical Mounting Kit

    Mechanical Mounting Kit

    27,30€ w/o VAT

    Mechanical fixing kit for surfaces unsuitable for self-adhesive installation (includes 1 drill bit + 1 PZ1/PZ2 screwdriver + 40 wall plugs and screws)

  • Bag of anchors and screws for Saugnac crack monitor

    Mechanical Fastening Pack

    15,00€ w/o VAT per pack of 50 units

    Bag of 50 anchors and screws for mechanical fixing on surfaces unsuitable for self-adhesive mounting

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