This is a very well made and useful little tester and it is easy to use also. I was recently diagnosed with asthma and like to check my oxygen levels regular together with my peak flow. I would recommend this oximeter to anyone. Martin Robson.
This item was very useful as an aid to starting my socks but i couldnt manage to pull the sock on any further than this but perhaps this comes with practice. Iam happy it helps me start the process though as i can then grab the top of the sock with my hand to complete the job.