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dumpy level[¦dəm·pē ′lev·əl]
A surveyor's level which has the telescope with its level tube rigidly attached to a vertical spindle and is capable only of horizontal rotary movement.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
spirit level (which is parallel to the telescope and mounted below it); the telescope is permanently attached to leveling base.A surveying instrument used in the direct measurement of differences of elevation; consists of a telescope and a
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.