This optical instrument is designed for the precise observation of light spectra. Dating back to the mid-20th century, it is likely a model from the 1920s. The device features a black lacquered brass body equipped with an adjustable slit and a prism set. It includes an achromatic lens for high-quality visual clarity. The instrument comes in its original velvet-lined hard case.

Free worldwide shipping included via FedEx. Each sculpture is securely packed in a custom crate to ensure safe arrival. A tracking number is provided immediately after dispatch. Shipping from Hungary with a typical delivery time of approximately 5–10 business days.