Examlex
Which of the following is deductible as a trade or business expense?
Pitch Cone
The imaginary cone that defines the pitch surface of conical gears or screw threads, where the common vertex of the gear teeth or threads would converge.
Cone Angle
The angle formed between the outer surfaces of a cone, measured at its widest part.
Bevel Gears
Gears designed with angled teeth so they can transmit motion between intersecting shafts, typically at a right angle.
Intersecting Shafts
Shafts that cross each other at any angle other than 90 degrees, often requiring special joint or coupling to transmit power.
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