Features: 1) Eyepiece: paired wide field plano scope eyepiece WF10X, WF15X, or WF20X 2) Objective: 3 turret styles with 1X and 2X, or 1X and 3X, or 2X and 4X Objective 3) Viewing head: 45 degrees inclined binocular viewing head, interpupillary adjustment from 50mm to 75mm, dioptre on one ocular tube 4) X factors: 0X-20X, 10X-30X, 15X-30X, 15X-45X, 20X-40X, 20X-60X, 30X- 60X, 40X-80X 5) Stage: Ø95mm 6) Focusing: rack and pinion focusing with slip clutch and tension adjustment 7) Working distance: 1X objective 55mm, 2X objective 81mm, 3X objective 61mm, 4X objective 57mm 8) Illumination: top and bottom light: 12V/10W halogen lamp Inner packing: Foamed plastic + inner carton Outer packing: 4sets/ctn Carton dimensions: 61 x 35 x 36cm N.W.: 9.5kg G.W.: 11kg