Zhumell LOMO P-111 modular brightfield microscope with Free UPS Ground Microscope "coarse adjustment knob" Questions

once the stage is adjusted it comes down slowly Tighten the screws of the coarse adjustment. You must disasseble the coarse adjustment knob (i.e. remove the plastic caps) in order to do this.

...coarse focus knob you will see a "chrome" ring with holes it it. That ring needs to be tightened just a bit. It will make the coarse focus knob stiffer so tighten only enough to stop the downward ...

...coarse adjustment knob screws in order to create more friction so that the stage stays put. That, or don't adjust anything and keep holding on to the coarse adjustment while you're using it. you can ...

...coarse focus knob you will see a "chrome" ring with holes it it. That ring needs to be tightened just a bit. It will make the coarse focus knob stiffer so tighten only enough to stop the downward ...

...coarse" focus knob. If you start at the low magnifications find what you want to concentrate on with the coarse focus knobs and then work your way up to the higher powers, you will have very little ...

...help! With one hand push the stage down, and with the other turn the coarse adjustment down. It's a cog alignment issue. The coarse adjustment cog should be turning in order to catch the stage

...coarse adjustment screws to provide more tension so it sticks. Leave the fine adjustment as it is, it works on a different system. It's the coarse adjustment crank that is slipping due to the weight ...

...coarse adjustment so it generates enough friction to keep the stage in place. How to tighten it will vary from scope to scope, but most just have the screws on the knob (metal circle inside the knob ...

...adjustment just inside the coarse focus knob. (same side as the switch) It looks like a chrome ring with 2 or 3 holes in it. You may have an odd looking tool that came with your microscope that is ...

...adjustment for this. It is located on the coarse focus knob which is on the same side as the switch. It looks like a chrome ring with about 3 holes in it. A strange looking tool should have come with ...