My old level bubble for sale as I've got a new one while waiting for a replacement bubble to arrive from china. Amazon is a wonderful thing but sometimes it takes a while which is not good when you're impatient to shoot! The new bubble doesn't fit perfectly as you can see from the photos but it does work OK.
Inside diameter is 19mm, outside diameter is 25mm.
Brand new Centra Level I costs £55.
Can post in jiffy bag and tracked for £2.50 extra.
Payment via Paypal.