principal meridian
In the blank" >target="_blank" >glossary/blank" >target="_blank" >glossary/rectangular/" class="glossaryLink" data-cmtooltip="b59d541aabcb8ef0b9619ec70d6b7aeb" blank" >target="_blank" >rectangular-blank" >target="_blank" >system/" class="glossaryLink" data-cmtooltip="ff962cca08ebeb5cba25b73f74d0e58f" blank" >target="_blank" >blank" >target="_blank" >glossary/rectangular/" class="glossaryLink" data-cmtooltip="b59d541aabcb8ef0b9619ec70d6b7aeb" blank" >target="_blank" >rectangular blank" >target="_blank" >system of blank" >survey, a north-south blank" >target="_blank" >glossary/reference-line/" class="glossaryLink" data-cmtooltip="2699a0fa27e1de3b1c41fa523ce26baa" blank" >target="_blank" >reference line established at a substantial blank" >target="_blank" >landmark for a large area of land. (Ching, 1995)
