The vintage brass eyepiece ocular lens with inner graticule scale is a rare and collectable scientific instrument that would have been used in microscopes. Made from brass, this eyepiece features intricate inner graticule scales for precise measurements. Unfortunately, it is missing a pointer, which may affect its functionality for scientific purposes. However, it is a unique and historically significant piece that would appeal to collectors of vintage scientific instruments. Measures 4.3 cm. in height and will fit an opening of 2.8 cm. diameter.
eBay