Zeiss 0.4× front‑optic objective — Part No. 455026‑0000‑000. Designed for use with Zeiss stereomicroscopes such as Stemi 2000, Stemi 508, Stemi DV4 and similar. Working distance: ~211 mm — ideal for large‑field stereo viewing or macro‑scale observation. Compatible with standard Stemi stands and illumination modules. Optics and mount condition verified; yields wide, clear stereo image suitable for dissection, inspection, or specimen overview tasks.