today's work

[DrSchmidt]

Outstanding...very beautiful. Worth the time and effort....

[He Who Shall Not Be Named]

[He Who Shall Not Be Named]

[He Who Shall Not Be Named]

[redboat219]

Ran it throught Google Gemini-

For a propeller template, the most straightforward and contextually relevant interpretation is that 36^\circ and 48^\circ are specific propeller pitch angles that the tool is designed to set or measure. 36^\circ: A finer (lower) pitch setting.
48^\circ: A coarser (higher) pitch setting.

The other numbers (5, 6, 8) are for indexing based on the number of blades.