supply of umbrella survey , umbrella survey. detailed specification as follows: a. diameter of umbrella: 2160 mm, b . length of circular handle/post: 2550 mm, c. diameter of circular handle/post: 45 mm, d. no of cane ri b : 10 nos. e. length of cane rib : 1100 m, f. diameter of circular cane rib: 25 mm, g. colour of circular handle and cane ribs: black, h. colour of top layer fabric: white (webfab trap & canvas cotton duck canvas cloth 500 gsm). i. colour of inner/bottom layer fabric: blue (webfab trap & canvas cotton duck canvas cloth 500 gsm). j. metal locking arrangement with chain to keep umbrella in opening as well as in closed position. k. provision of fabric strap with button arrangement to keep the umbrella wr apped. [ warranty period: 30 months after the date of delivery ] ]