Hammond 1593 series instrument enclosures hammond 1593ygy hand held grey instrument enclosure from the hammond 1593 series 140mm in length 66mm wide and 28mm high ergonomically designed for a comfortable fit into the users hand this enclosure has a recessed top for membrane display the unit is secured with self tapping screws and is ideally suited for mounting printed circuit boards hammond 1593ygy instrument case gpabs 140 x 66 x 28mm grey