Kaiser Fototechnik diascop 3 3x slide projector

"diascop 3" Slide Viewer Slide viewer with 3 x magnifying double lens for framed slides, 5 x 5 (2 x 2 in.), and uncut film strips in protective sleeves. Drop chute with collecting tray. On/off switch and connecting socket for mains transformer 2007.
Battery operation: 2 x 1.5 V C-size (supplied without batteries);
Lamp: 2.5 V, .3 amp., E10, spherical;
Lens: 76 x 76 mm (3 x 3 in);
Dimensions (WxHxD): 80 x 160 x 170 mm (3.1 x 6.3 x 6.7 in.).
(Replacement lamp: 2107 respectively 2108, Attention: please make sure, that unit is equipped with lamp 2108 if you use mains adapter 2007).