There are a couple of options here. One is the following website:
Custom Tailors and Design Association
Another is through a search engine. An item to be careful is that many Tailor references are people that do alterations mainly for women’s clothing. Ask if they assist in the manufacturer of men’s clothing. Also ask if they finish button holes and the sleeves.
Sometimes a big box store or local fine men’s clothing store can help out here – just ask if they are willing to provide you the results and fill out the provided Measurement Sheet. Also, employees at box stores will often refer you to a tailor as they have significant knowledge about the industry and nearby options.
Here are two guides I found online that are also very useful.
Posted in: Tailored Sizing