Is this a good leveling tool?

Hi,

I recently came accross this item, while reading on a forum.

http://srm-tech.co.uk/epages/4c008923-2265-416e-a207-cc9dd8b06028.sf/en_GB/?ObjectPath=/Shops/4c008923-2265-416e-a207-cc9dd8b06028/Products/TSL1

I used my clearaudio level gauge to level my TT but I can't place the level gauge in the very center of the platter. This one can be placed on the very center. Is it helpful or is the presentation of it o the SRM-tech website just rubbish? Has anyone here used this item before?

Otherwise they have a clamp with a bubble level as well. Any feedback would be welcome.

http://srm-tech.co.uk/epages/4c008923-2265-416e-a207-cc9dd8b06028.sf/en_GB/?ObjectPath=/Shops/4c008923-2265-416e-a207-cc9dd8b06028/Products/RSC

Best,

B.