material; ABS,

product size; 7CM*6.2CM,

product packaging; each independent color box packing, a 90 pound test instrument which has ; manual

packaging products containing 46.5 grams per each weight.

measuring instrument which use: pounds

1: when you use the pointer to the bottom of the first set.

2: confirm the pointer to the 0 scale.

3: and then in the sweet area of the racket cross point test, not only single line, to cross the line.

4: turn the ball over, go for the first time to use the pointer to the straight as the standard, if the pointer has the vertical press line to coincide to pointer to the right is wrong.

5: if it's close to the border, it's going to be a little bit higher.

6: if a few pounds children too low, it is recommended practice for some time to pull high test-retest, visual measured thousands of pictures, please rest assured that the use of.

reminder: please take line measurement measurement racket can correctly reflect the sweet spot, a few pounds of strings, for more accurate measurement in the area can take on a sweet line, with average value of quasi.

measurement after the pointer back at the bottom of

Note: measuring rotary dial do not exceed the maximum reading time!!!

pictures: