Mavic makes a device, but as I recall it's over a hundred dollars, probably not something the home use person would want. If your cleats are set, you can measure from the center of the bottom two screws to the bottom of the insert triangle. We give fitting customers those two dimensions and you are good to go. Of course, with Looks you have the option of screwing in the center section of the cleat to your shoe so when you remove the cleat that plastic piece stays on the shoe and you only put the new cleat over that piece. But yo uhave to have shoes that will take the center fit screw.
Mavic's cleat machine only really works if all your shoes are the same. It makes it easy if you have three or four pairs of the same shoes.
Like most of this stuff, it's priced for a shop using it over and over.
Look cleats still come with the sticky template that can be laid over the old cleat position to help with setup, but the bottom screw measurement really is a better method. With the center fit plastic insert, you are good to go for replacement cleats.

The Mavic device holds the shoe (you lock it in) and then there's a piece on top to indicate the cleat positition. Take that she out and out the next shoe in and set the cleat up. But it's really designed for fitters to use, but if you can find one it's available. It's just expensive.