Ribbed glass spreader lense<br/> <table border="0" cellpadding="0" cellspacing="0"><tr><td class="articleid-part">1</td><td class="articleid-part">280</td><td class="articleid-part">809</td><td class="articleid-part">009</td></tr></table> <br /> <br /> internally fitted, for linear beam control, continuously adjustable through 360°<br/><br/> <br /> <br />