into the cocked or 34 ready to open 34 position shown in fig9 then he or she can withdraw the top portion 12 returning briefly to fig3 the enclosure is shown as comprising a hinge 70 on that portion furthest away from the catch mechanism 32 22 it is to be appreciated that any other means of attachment may be used other than the hinge and it is preferred that catch mechanisms 32 22 be used in all parts of the cover however those skilled in the art will be aware of many other variants and mixtures of catches which may be used in combination with the catch mechanism 22 32 described in this present application returning once again to fig9 the catch mechanism 22 32 having been placed in the cocked position indicated at each location where it occurs in the enclosure 10 and the screwdriver 64 or other sharp object having been removed from each aperture 18 the top cover portion 12 is withdrawn as indicated by a sixth arrow 72 in the withdrawal of the top cover portion 12 the wedge 30 maintains the catch portion 44 clear of the boss 32 for a sufficient distance that the cross member 54 falls onto.