Bubblesong
Contributor
Your photo shows a black o ring, whereas my Nokta Makro showed up with a translucent ring that refuses to allow closing, but I switched for a black ring in the packaging that does allow closing, is this required, because there were no instructions about it.You need the ring to form a seal, it's stiff so use the cover with the pointer attachment and when using the coil don't attach by holding the coil on the front you'll break it, hold it close to the unit. Use a little grease.