The 1593QALTBU is a transparent blue 1593Q handheld instrument enclosure with a battery compartment, from the 1593AL series of ABS plastic cases with aluminum end panels. Its 112 mm length makes room for both a printed circuit board and a battery bay in portable test instruments, meters and hand-held controllers.

The drawing shows 112.00 x 66.50 x 28.00 mm (4.41 x 2.62 x 1.10 in) overall, and the part page lists a nominal size of 4.4 x 2.6 x 1.1 in (112 x 66 x 28 mm); the series ordering table lists 112 x 66.5 x 21 mm. The board area inside measures 68.43 mm long, 60.79 mm wide and 21.70 mm high, and the recessed top offers a 100.00 x 55.00 mm inlay for a membrane display or keypad.

Batteries are reached through the long life "three snap" battery door. A single removable flat aluminum panel, 1.63 mm thick, closes the front. The purchased assembly includes top and bottom covers, 1 aluminum panel, the battery door and 4 cover screws, supplied in a black finish for this colour; the recommended torque is 57 lbf-in (40 cN-m). No IP rating is listed for this version.

Molded from satin-textured general purpose ABS rated UL94 HB, the 1593QALTBU is RoHS and REACH compliant and ships shrink wrapped at 0.16 lbs (0.07 kg). The P.C. board is not supplied; the matching 1593QPCB board, 1593ATS50 board screws, 1593PIR10 IR panels, 1593PAL10 aluminum panels and 1599CLIP / 1599CLIPGY belt clip are available.