On: Microscopic footage of a needle moving across the grooves of a record

[TylerE]

Actually, standard grooves are only ~40uM (0.0015in) wide. That's small enough that's it going to be really hard to photograph clearly - and that's the width from peak-to-peak, the modulations are smaller.

[xigency → TylerE]

Here is a source of LP images that are the same scale as the YouTube video, using a normal microscope.

http://www.cleanlp.com/CleanLPMicroscopePhotos.tpl

[TylerE → xigency]

Those are shot directly perpendicular from a hair's width away. Perspective shots are a lot harder.