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Products
About Avongard Tell-Tales:
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Avongard Tell-Tales are precision gauges that consist of two plates which overlap for a part of their length. The bottom plate is calibrated in millimetres and the top plate is transparent and marked with a hairline cursor in the form of a cross.
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Avongard Tell-Tales are suitable for internal and external use.
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The Tell-Tales are manufactured in vandal resistant polycarbonate. The co-efficient of linear thermal expansion is 7.0x10-5 cm/cm/oC for ambient temperatures between -30oC to +30oC.
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Manufactured to conform to BS EN ISO 9001:2000
Tell-Tales |
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The Avongard Tell-Tale Plus monitors horizontal and vertical movement across a crack on a flat surface. The Tell-Tale is preset at zero with four pegs. The pegs are removed after the Tell-Tale is fixed across the crack. |
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The Avongard Corner Tell-Tale monitors horizontal and vertical movement across a crack in a corner. |
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The Avongard Displacement Tell-Tale monitors horizontal and displacement movement where there is a “step” across a crack due to displacement or “out of plane” movement. |
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A basic (and the original) calibrated Tell-Tale that monitors horizontal and vertical movement across a crack on a flat surface. |
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This set contains all the products needed to set up a Tell-Tale crack monitoring system. |
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Calipers |
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Fine resolution monitoring can be achieved using high precision calipers to measure the distances between a datum fixed either side of the crack. |
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This set contains all that is needed to set up a crack monitoring system using precision calipers. |
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Accessories |
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Prior to monitoring the crack, the widths and location of the cracks are measured. The Avongard Crack Width Gauge is specifically designed for this purpose. |
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Monitoring datum for use with calipers. |
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Monitoring datum for use with calipers. |
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Monitoring datum for monitoring of cracks in corners using calipers. |
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For fixing all Avongard Tell-Tale products and Avongard Corner Discs. |
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Can be used to fix all Avongard Tell-Tale products as well as all Caliper datum. |
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Please note - specifications may change without notice.
Copyright Avongard Ltd 2010
