An antique optical instrument for eye examinations, preserved in its rigid black-covered case with a molded brown velvet interior. The set includes a circular screen with a small central aperture (pinhole) mounted on a detachable handle, and a lens. The pinhole allowed for testing visual acuity by reducing optical aberrations, a classic method used by ophthalmologists and opticians to distinguish refractive errors from other eye conditions. The separate lens, marked "13," is likely a test lens used during the examination. This type of small, portable instrument was commonly used in opticians' and ophthalmologists' offices during the first half of the 20th century.
✦ Origin: Europe ✦ Estimated period: Circa 1930 ✦ Dimensions: box approx. 14 x 6.5 x 2 cm ✦ Material: metal, optical glass, leather-wrapped case ✦ Condition: Good overall condition; signs of wear in the interior velvet and slight marks on the case, lenses in good condition
An old scientific instrument related to vision examination, ideal for a collection of medical instruments, an old ophthalmology cabinet or a scientific cabinet of curiosities.
