The present invention resides in a collapsible level comprising a first segment; at least one additional segment, physically independent of the first segment and operable with the first segment to form the level; a leveling vial supported in at least one of the segments; and a linking member operable with the segments to permit the segments to be assembled and to secure an assembled relationship between the segments, as well as to maintain a connection between the segments when disassembled. In an alternative embodiment, the linking member is removed and the segments link together magnetically. The present invention further provides means for longitudinally extending the length of the collapsible level, thereby providing the collapsible level with the ability to level a wide range of shaped and sized surfaces. The present invention further resides in an accessory device operable with a level to enhance the functionality of the level, the accessory device comprising: a housing; andmeans for attaching the housing to the level in both a removable and slidable manner.
