This inexpensive, accurate and easy to use level is designed for the different leveling applications that you will find on today's job site. This instrument can handle various tasks, whether you need to level foundations, patios or decks, run straight lines, plumb walls or turn angles, perform different grading applications, streets, curbs or landscaping, or any other light construction leveling application. Designed to withstand the rigor of everyday field use, NSL100B is an excellent choice for your level requirements. Specifications Telescope   Power 20x Minimum Focus 5 feet Aperture 22mm Field of View 1° Stadia Ratio 1:100 Transit Capabilities NO Horizontal Circle Yes Level Vial 7 min per 2 mm division Instrument Accuracy 1/4" at 100 feet Weight   Instrument only 3 lbs Instrument with case 6 lbs Tripod thread 5/8" x 11 Warranty Limited lifetime warranty from manufacturers defects. Manual and Brochures Download the NSL-100B Spec Sheet