The Tell-Tale is fixed across the crack using screws and plugs and/or adhesive Fix the Tell-Tale over the crack with the vertical 0 line on the calibration scale parallel with the crack to be monitored. Ensure the plate with the engraved AVONGARD name is on the right hand side of the crack. Remove the two pre-set pegs. If the crack opens or closes the cursor moves relative to the calibration scale. The opening or closing of the crack can then be recorded on the record sheet.
Manufacturer: Avongard
Brand: Avongard
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