The 1593NALTBU is a transparent blue handheld ABS enclosure in the 1593N size, part of the 1593AL series with aluminum end panels. At 25.20 mm high it is a low-profile case for hand-held instruments, data loggers and remote controls built around a printed circuit board.

The drawing specifies 111.25 x 75.00 x 25.20 mm (4.38 x 2.95 x .99 in) overall; the part page lists a nominal size of 4.3 x 2.9 x 1 in (109 x 74 x 25 mm) and the series table 111 x 75 x 25 mm. Inside, the enclosure measures 101.00 mm long, 68.82 mm wide and 19.70 mm high. The recessed top has a 99.20 x 64.00 mm inlay, 0.75 mm deep, sized for a membrane display or keypad.

Without a battery door, the 1593NALTBU is IP54 rated and uses lap joint construction against dust and splashing water. Two flat aluminum panels, 1.63 mm thick, form the removable front and rear ends. The assembly is closed with two self-tapping cover screws (black for the transparent blue version) at a recommended 57 lbf-in (40 cN-m).

Material is general purpose ABS with a satin texture, flame rated UL94 HB, and the part is RoHS and REACH compliant. The P.C. board is not supplied. Accessories for the 1593N include 1593NAL10 aluminum panels, 1593NIR10 infrared panels, 1593ATS50 board screws and the 1599CLIP / 1599CLIPGY nylon belt clip.