I have been all over every grammar site I can find (including this one) and cannot find a definitive answer. I am looking for a rule that says in a list of singular nouns, each noun must have its own determiner - even if they would all be the same one.
My employer has invoked parallelism as an explanation, but I do not think that applies here - as they are already of parallel form. Everything I can find on parallelism speaks to verbs and tenses, not nouns.
I contend that it's a stylistic choice, as the meaning is clear either way - but I can't prove it.
"The sensor includes a right-angle infrared LED and right-angle phototransistor..."
"The sensor includes a right-angle infrared LED and a right-angle phototransistor..."
Are both right? If not, and the determiner MUST be used, where/what is the rule? If it is a stylistic thing, I just need confirmation.