what?

Prepping for a business trip next week, so not a lot of time (or energy) for blogging, but there does seem to be just enough for a pop quiz.

So, in the spirit of this blast from the past, what is the product pictured below used for? (No fair answering if you read Japanese.)

Answer in a few days.

Update: OK, just to be completely clear, the "blast from the past" link was not intended to imply that the function of this product is in any way related to the function of the linked one (as much as its superficial appearance might imply otherwise).