Hold the tool as you would check a patient and scroll via the lenses using the lens wheel. Ensure that the wheel still clicks in place as it should.
Pay particular focus to how much effort is needed to turn the wheel. A rightly serviced tool would need minimal effort to toggle between the lenses. If it feels pretty stiff, possibilities are it probably was not serviced rightly.
Power lenses and filters
Take your Specialist Keeler ophthalmoscope and turn it on. Shine the tool against a white background such as a clean sheet of cart or white paper. This will permit you to view if it truly is clean.
Hold the tool roughly 1 foot away from the white sheet of paper and ensure the room is a pretty darker than usual. Then scroll via all the graticule control ranges and filters using the auxiliary lens wheel. When doing so keep an eye out for any strands of dust or particles or any other potential residues, which will fast show up.
It is the most vital aspect of the tool. The illumination should be continuous and visibility brighter. It should not flicker or be intermittent.
Assuming you have given your tool a clean bill of health and all of the above are okay, you can walk away knowing your tool has been given a best Specialist Keeler Ophthalmoscope repair service.
Or you could send to Ophthalmon your Specialist Keeler Ophthalmoscope and be 100% certain that your ophthalmoscope will be repaired perfectly!