You only have the code to reset the search on the results page:
<?php
if(!session_id()) session_start();
if(isset($_SESSION["WADbSearch1_member_directory_Results_measurer"]) && isset($_GET['reset']) && $_GET['reset'] == "true") {
unset($_SESSION["WADbSearch1_member_directory_Results_measurer"]);
}
?>
you do not have that code on the search page.
Add that code on the search page, then on the results page, change the new Serach Link:
<div><a href="member_directory_Search_measurer.php">New Search</a> - Measurer Directory Sorted by County</div>
to include the reset=true query sting so it will clear the search results:
<div><a href="member_directory_Search_measurer.php?reset=true">New Search</a> - Measurer Directory Sorted by County</div>