I recently bought a pocket magnifying loupe for amateur rockhounding purposes. However, I am moderately confounded by the configuration of the folding cover. How is this thing supposed to hang from a lanyard? There is a loop which seems intended to serve as a point of attachment-- but it is opposite the hinge, so the loupe hangs open when worn unless the hinge screws are kept rigorously snug.
An image search shows that this arrangement is typical of such loupes. What gives? Is the loupe intended to be worn open, and the cover only used when stowed in a pocket, to protect the lens from keys and loose change? Or is there some other trick to it? I am clearly much clumsier than the average user of such a gadget, because I am easily capable of destroying the lens by smacking it into things while it dangles around my neck.