| STYLE DESIGNATOR | ROUND FRAME, ROUND LENS TYPE |
| LAMP TYPE ACCOMMODATED AND QUANTITY | 1 INCANDESCENT |
| MOUNTING METHOD | PANEL |
| TERMINAL TYPE AND QUANTITY | 2 SOLDER LUG |
| MATERIAL | PLASTIC PHENOLIC BODY |
| OVERALL LENGTH | 0.938 INCHES NOMINAL |
| OVERALL DIAMETER | 0.625 INCHES NOMINAL |
| LAMP INDUSTRY NUMBER | 48ESB |
| LAMP BULB SIZE DESIGNATOR | T-2 |
| LAMP BASE TYPE ACCOMMODATED | TELEPHONE SLIDE NO.ONE |
| LENS MOUNTING METHOD | PUSH ON |
| LENS LIGHT TRANSMISSION CHARACTERISTIC | OPAQUE SINGLE LIGHT 1ST POSITION HORIZONTAL |
| LENS FACE SURFACE CONDITION | SMOOTH SINGLE LIGHT 1ST POSITION HORIZONTAL |
| LENS BACK SURFACE CONDITION | SMOOTH SINGLE LIGHT 1ST POSITION HORIZONTAL |
| PANEL ACCOMMODATION HOLE DIAMETER | 0.500 INCHES NOMINAL |
| PANEL THICKNESS FOR WHICH DESIGNED | 0.734 INCHES MAXIMUM |