Non adjustable rifle scopes ; like in WWI and WWII

[A3 Pseudo Scout]

Two questions, and they go together:

1. Is there a modern equivalent (over-the-counter) of the scope attachments that adjusted the scope for elevation and deflection (windage)?
Modern scopes have adjustments inside the scope.

2. Is there a modern scope that has no built-in adjustments?

Jeff Cooper lamented the loss of the simplicity and robustness of those two items. He said that at Gunsite, there were few rifle classes that did not have scope malfunctions. He advocated a scope that had the reticle etched on the glass; not a wire inside the glass. The elevation and deflection adjustments were to be made by the scope mounts.
Please lead me to any posts in this forum and links outside.
I thank you,
Dave

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