| Notes/Description |
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Orthography is in accordance with the orders of the Government of India, dated 3rd September 1875.
Conventional Signs. Trigonometrical Stations ▲ Intersected Points and Traverse Stations ○ Stations Boundaries ~~ Edge of Forest Clearances ☁ Heights above mean sea level determined trigonometrically thus 752.
Relative heights in feet of banks to beds of water-courses thus 15r The linear value are derived from the measured length of the Sironj base, assumed as log. feet 4.5844824, through the Karachi Longitudinal Series.
The Heights are referrible to Mean Sea Leval at Okha Tidal Stations on the Gulf of Cutch.
The longitudes are referrible to Madras Observatory, 80° 17' 21 to which correction of - 2' 30 must be applied to reduce to the most recent value, viz : 80° 14' 51 Index to the adjoining sections |
