The 3048 model features a full size optical system and requires minimum maintenance with features designed to prevent accidents common to most student microscopes. Suitable for grade 6-9. Limited 5 year warranty. Features: Monocular 45º inclined head with 360º rotation Locked on 10x wide-field eyepiece with calibrated pointer Revolving triple nosepiece with positive click stops Full size, color-coded DIN standard objectives Slip clutch with tension adjustment to protect focusing mechanism Safety rack top prevents damage to objectives and slides Calibrated 5 hole disc diaphragm Coarse focusing only Has on/off switch and a 3-wire cord Rugged all metal construction Vinyl dustcover and instruction manual included Shipping information: 7" x 10" x 16"-7lbs