Dome security clamps for 2.2m and 2.7m observatories. Kit comprises of 2 security clamps, including fixing kit, bolts, etc. These easy to fit clamps will provide additional security for your observatory, and will prevent the dome from being removed by any external force. They are useful to use whilst away on vacation, or in the event of unusually high winds. Ensure clamps are swung out of the way before attempting to rotate the observatory dome.