This series of instruments was designed for professional users who demand the highest quality and accuracy from their instruments, such as foresters, geologists, surveyors, architects, engineers, defense forces and yachtsmen. Clinomaster Clinometer $101.95 Sightmaster Compass $79.95 SurveyMaster Compass/Clinometer $188.95, 3/$527.85 Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.