In the portable cash register, in the 19th century, in the bottom of the ticket office was opening. For what?

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Hmm... I, as a professional designer, just gave an answer that was correct). This question , about the hole, were discussed in the program "What, where, when?". Played kids teams.\r\n\r\Ptak here, the portable (or rather transportation) office, with the filling double walls, was quite heavy. But during her transfer to the new location, the cashier still further, to secure, fastened to the floor. The holes in the bottom of the box is the usual mounting holes. That is, the openings through which are inserted fasteners (studs with nuts or bolts) that fasten the box to the floor. In short, this is an obvious, standard design solution. Young "experts", by the way, question not answered).
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