Used controller in USA

Consider the microscope's optical quality, magnification range, and overall condition. Check for any signs of wear, damage, or misalignment in the lenses and mechanical parts.

Use a reputable shipping service that specializes in delicate instruments. Ensure the microscope is well-packed with adequate cushioning to prevent any movement or damage during transit.

Regular maintenance includes cleaning the lenses with appropriate solutions, checking and lubricating mechanical parts, and ensuring that all components are properly aligned. Always follow the manufacturer's guidelines for detailed maintenance procedures.