The aerial was intended to replace an old slightly larger indoor aerial. Unfortunately, the reception with the new aerial isn't good enough so I have resumed using the old aerial which gives good reception. My only reason for trying to change was the improved appearance.
Having managed with a wrist instrument, although with some difficulty in obtaining an accurate reading, I thought that the model for the upper arm would be easier and more reliable. Unfortunately this hasn't proved to be the case. I have reverted to my wrist monitor with some disappointment.