A-A-52001 Planetables, Surveying, With Tripod And Carrying CaseThis commercial item description covers both an 18-x-24 inch and a 24-x-31 inch planetable board (457.2 X 609.6 mm and 609.6 X 787.4 mm), extension-leg tripod with a Johnson movement head and a carrying case for each size of planetable board.