Factory brochure weights try to make their trailers appear light so the dealer can sell you a trailer that's too heavy for you to tow. Trailers on the dealer's lot are at least 300 pounds more than their listed Dry Weight (doesn't include factory options like the awning, spare tire, etc) and tongue weights are usually understated at well.
The brochure tongue weight for my camper was 367 pounds.
The scale is accurate! This is before I filled with freshwater.
What trailer?
-- Chuck