preston1000
Active Member
Is there someone around my area that can inspect a Nagaoka MP-50 to see if the stylus is worn out? I don't have a stereo microscope and if I did, I wouldn't know what to look for. I'm in Orange County CA.
You need to mount the stylus with the dismnod tip pointing up at the lens, cantilever at 0 degrees.
With two lights perpendicular to the cantilever and a rotating stage you can then rotate the stylus through the lights observing the reflections off the wear surfaces.
My Wild scope uses 10x, 25 or 50x with a 1.5 multiplier. The pictures I have posted recently used a 10x USB eyepiece. More will follow as time allows.
Looking at your first two pictures you are almost there magnification wise.
Does your scope manufacturer offer a rotating stage. It is needed to properly measure wear.
Your lighting needs to be perpendicular to the cantilever and contact surfaces.
You are looking to see the two "headlights" that are the reflection off the wear surfaces.
Last picture is closest to the traditional way to measure wear. Cantilever would ussually be N-S with the lighting from the E-W.
If you look at the pictures I have posted, where you can see the light reflected off the contact surfaces, then you will be getting close. No reflection and there is nothing to observe or measure.
Are your lights pointing south and north? Can you rotate the stylus 90 degrees? Lights then E and W. That is the traditional image.
My scope uses Osram medical device lamps.