Dual Marine Optical Viewer – Brass Salvaged Navigation Instrument

This Dual Marine Optical Viewer is a salvaged instrument designed for shipboard or industrial use. It features a solid brass housing with two eyepieces and adjustable spacing for direct viewing. In addition, the internal optics include multiple lenses that vary in shade from dark to light. These lenses likely reduce glare and improve contrast under different conditions.

The unit includes geared adjustment controls with marked settings. These controls move internal elements to change magnification or light levels. The base sits flat and includes mounting holes, so you can secure it to a console, table, or display surface. The back is stamped “BB” with serial number 2985.

The brass shows consistent wear and patina from service use. Because of its compact size, it fits well on desks, shelves, or in display cases. As a result, this piece works well in offices, lake houses, or collections focused on marine instruments.

Features & Uses

• Solid brass construction with original patina and wear
• Dual eyepiece design with adjustable spacing
• Internal lens system with selectable filters
• Geared controls with marked adjustment settings
• Mounting base with bolt holes for secure placement

Condition

Authentic salvaged piece with visible patina, wear, and oxidation across the brass. The lenses are intact and vary in shade from dark to light as part of the original filter system. The internal optics have not been inspected or tested. All moving parts operate, but the function has not been verified. Sold as is.