When the Bat-Calendar computes a location a bell rings and a card with the information is ejected out of one of the four slots along the bottom. When Batman is using it the first card is shown in a close-up coming out of the third slot from the left completely ejecting out of the machine and landing on the table. However in the next shot Batman is shown having to remove the card from the slot because now (and in subsequent locations computed by the machine) just the front edge of the card comes out of the machine. Also the card is ejected out of the second slot not the third. As Batman removes the cards he hands them to Robin who reads them aloud but only four cards are read by Robin even though the bell sounds five times indicating five locations.
When Catwoman henchman "Cornell" puts on a Batman costume to impersonate the Caped Crusader, his utility belt is upside-down, as evidenced by the inverted bat symbol on the buckle.