Tex. Government Code § 62.003: CONSTRUCTION AND SECURITY OF JURY WHEEL.

(a) The commissioners court shall provide a jury wheel in which to deposit the jury wheel cards.

(b) The jury wheel must revolve freely on its axle and be constructed of a durable material. The jury wheel may be equipped with a motor capable of revolving the wheel in a manner that thoroughly mixes the jury wheel cards.

(c) At all times that it is not in use as provided by this subchapter, the jury wheel shall be locked by using two separate locks. The key to one lock may not open the other lock. The clasps attached to the jury wheel onto which the two locks are fitted must be arranged so that the jury wheel may be opened only if the two locks are unlocked at the same time. The sheriff shall keep the key to one lock. The district clerk shall keep the key to the other lock.

(d) The sheriff and the district clerk may not open the jury wheel or permit it to be opened except at a time and in a manner authorized by this subchapter, or permit another person to open the wheel if the person is not authorized by this subchapter to open the wheel.

(e) The sheriff and the district clerk shall keep the jury wheel, when not in use, in a safe place with security that prevents anyone from tampering with the jury wheel.

Acts 1985, 69th Leg., ch. 480, Sec. 1, eff. Sept. 1, 1985.