Scale Checker is a utility script for 3ds Max from developer Sergio Mucino. It scans a scene for objects with non-uniform scaling and prints them to a script file, giving you a written record to analyze.
The scope is deliberately narrow. Its author describes it as a very simple utility, made originally for a colleague, and it centers on a single task: finding non-uniform scaled objects and writing them out for review. There is nothing more to it than that one check.
Scale Checker is listed in the ScriptSpot library and is available as a free download here. A demo video is available, and developer Sergio Mucino's page carries further details on the script and related scripting tools. If keeping scale transforms consistent across a scene matters to your pipeline, this is a focused way to flag the objects that fall outside uniform scaling.