We use an atomizer. Mists exactly 1/16th of an ounce per squirt, which adheres evenly to the frozen glass.
I have to admit, making a martini to your exact specs is one of the great things about a martini. It is the original choose your own adventure cocktail with so many ways to go. Much like spaghetti sauce, everyone makes it a little differently. Some are better than others, but taste is subjective. The important part is that you get it right to your liking.
But if you are running 2:1 spirit to vermouth, you are doing it wrong. A quick search, and I can't find a single suggestion that would make a martini 33% vermouth. Even the Martini & Rossi website,
the makers of vermouth use a 10:3 ratio - and they are selling vermouth!
That said, there has been a push in the past few years to call anything in a martini glass a martini. While I won't argue that a "proper" martini is gin, I prefer vodka - hence calling it a "vodka martini". I think it's an improvement, because I prefer the cleaner taste. Just dont put 1 ½ oz. of orange rum and 3 oz. of lemonade in a martini glass with sugar on the rim and call it a martini. The martini is more than the glass in which it is served. The name evokes a certain level of class, and an appreciation of nuisance. Like the hotdog argument, it goes much deeper than "but it qualifies".