


If used according to the use instructions, periodic re-calibration is not required. If at any time you question the measuring accuracy, please call 1-888-848-2572. Manufacturing date is given by the LOT number on the back of the product. The first number after LOT represents the last digit of the year of manufacture. The next three digits give the day of the year of manufacture. An example: LOT 0116 xx xx – this product has been manufactured on the 116th day of the year 2000. 10 What to do if ..