Clean all parts and then re-assemble. Ensure to lubricate the threads of the Compression Gland Screw with a durable lubricant. The Eye Lens needs no maintenance. However, ensure that the bolt stays firm in the aluminum chamber body. Use the stainless steel nut to keep it firm in the body.
Focal point is adjusted by using the brass nut.
Loosen to raise the lens and tighten to press it closer to the sample. Gauge No maintenance required. The Piston inside the Compression Tube should be lubricated occasionally for optimal operation. The piston should then be visible. Push the rod up and lubricate piston and also squeeze a small amount of lubrication under piston to lubricate all of Compression Tube.