Each track licensee shall cause to be erected a sign or commission upon which shall be displayed the approximate straight odds on each horse in any race; the total amount wagered upon each horse in each pool; the value of a $2 winning mutuel ticket, straight, place or show on the first three horses in any race; the elapsed time of the race; the value of a $2 winning daily double or twin double ticket, if a daily double or twin double be conducted; and any other information that the commission may deem necessary for the guidance of the general public. All machines and equipment used for pari-mutuel betting or for the display of such information must be approved by the commission and the State Tax Commission before being used. The commission and the State Tax Commission shall not require the installation of any particular make of mechanical or electrical equipment.