Tourna Unisex Adult Stringmeter, Black, One Size

expensive but does let you compare relative tensions from one stringing to another.

Pros - Quick and easy to use once you've read the instructions, seems to be accurate for the main part, certainly no wild discrepancies when tested on rackets I'd had professionally strung.Cons - Cheaply built and overpriced for what it is. The arrow pointer for setting string guage is a tiny sticker that comes loose easily. I was lucky that mine was still in place when my device arrived (I hope it was the right place). However, i can see how it could easily become dislodged in transit making the device useless unless someone somehow had the means to recalibrate it. If you are lucky enough for your to arrive with arrow in place i'd recommend using a pen knife to scrape a permentent location marker for it in case it soon falls off. In addition the general build quality is quite poor. Cheap plastic that feel like it will break if dropped. In fact I've already twice had mine break apart into 2 pieces when i've tried to measure tensions of over 60lbs.

Gives a consistent reading for string tension. Get a useful and pretty accurate reading down the central main strings. Anywhere else not so good. You would be surprised at the variations in tension across individual strings but string tension should really be considered across the bed rather than on individual strings.As a recent stringer of my own rackets this tool is quite invaluable at comparing tensions between rackets.

This item is a very low quality item. From the first use the spring was unseat (dislocate) and that was impossible to replace it.

Easy to use, feels like long lasting equipment.

Ease of use

Not to sure I trust the readings this?

Its not an exact science. Its been mentioned upfront its not. So long as you know that, and you can find it useful (I have). its a good tool to have.