Standard Tell-Tale

SKU TS21 RRP £8.45

£8.45

Ex VAT

£10.14

Inc VAT
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Description
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Description
The Avongard Tell Tale standard crack monitor provides precision monitoring for both horizontal and vertical movement across a crack on a flat surface. Featuring two plates which overlap, the bottom plate contains a calibrated grid in millimeters with the top transparent plate containing precision cross hair which slides over the grid and shows any movement. A detailed positive or negative reading can be read from the position of the cross hair on the graduation of the underlying grid to an accuracy of +/- 1.0mm and by interpolation to +/-0.5mm. Avongard crack recording sheets are supplied with each unit to allow accurate recording of movement over a period of time. Fixing In Place The Tell-Tale is fixed across the crack using screws and/or adhesive. The tape is then cut. As the crack opens, or closes, the cursor moves relative to the calibration scale. The opening or closing of the crack is then recorded on the crack record sheet supplied.
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