Presenting a new line of precision and analytical balances, The AL-311 precision balance is designed for everyday laboratory routines, Featuring a 360? Glass draft shield and advanced force motor technology the AL-311 produces incomparable accuracy in its class, Underweighting counting and percent weighing features are standard, Force motor technology for accurate and repeatable results Fast weight results Built in glass draft shield for maximum stability Built in bubble level and adjustable scale feet Stainless steel weighing pan and draft ring are removable for easy clean-up AC adapter included 10 weighing modes: gram carat pound ounce troy ounce grain pennyweight Newton Tola and TAR Bi-Directional RS-232 Standard Includes calibration weight Weight Display Software included Underweighing hook for specific gravity and weighing magnetic materials Easy Calibration - Span or Linear SKU: AWS026