A Treatise on the Application of Marine Surveying & Hydrometry to the Practice of Civil Engineering

accuracy accurately Aldcliff alluded applied ascertained base line chapter Chester circle compartments Connah's Quay convenient cord correct cross section datum line depth at high determined diagram different stations direction distance employed engineering error estuary extended feet 4 inches field book fixed flag flood Glasson GLASSON DOCK graduated Heaton height instrument laid Lancaster length line of high low water channel low water line magnetic north manner described Marine Surveying mark measured method miles navigation neap neap tides necessary objects observed angle obtained parallelism Plate points positions protracted protractor purpose reference registered remarks rise of tide RIVER DEE RIVER LUNE river Ribble river Tay sand banks scale sections and borings sextant shew shewn situations soundings spring tide station pole stream sufficient surface surveyor tachometer theodolite tidal lines tide gauges TIDE STAFF tion traverse surveying triangulation stations vane variation vernier water margin whole