Calibration certificate for 3m or 3.5m (10ft) tape measure. Not to UKAS calibration but traceable to trading standard. This certificate should be purchased along with a 3m or 3.5m tape measure in order to attain a calibrated tape measure. Applicable for all 3m and 3.5m tape measures to a set standard except diameter tapes, adhesive steel tapes and fibreglass tapes. Calibrated measuring tape and certificate are delivered together.