Features ABS PROTECTIVE SHELL: The prism is equipped with an ABS protective shell, ensuring that the glass prism part is not worn and extending its lifespan. OPTICAL GLASS: The use of optical glass enhances the prism reflection ability, with full texture, clear and bright, more accurate and durable measurements. WIDELY USED: This prism replacement can be used together with a total station for land surveying, and is widely used in various industries such as subways, railways, tunnels, dams, steep slopes, etc. FINE WORKMANSHIP: Well crafted in standard size and clear grooves, this peanut prism can be easily installed on the stand for convenient use. IDEAL REPLACEMENT: Wonderful replacement for the old and damaged parts, helps you improve the measuring efficiency! Specification:Item Type: Peanut Prism Mode: AY02 Material: Optical Glass, ABS Glass Surface Diameter: 1 inch (25.4mm) Scope of Application: Testing of tunnels, subways, mines, highways, etc. Application: Widely used in various industries such as subways, railways, tunnels, dams, steep slopes, etc. Package List:1 x Peanut Prism 1 x Cover  Package List 1 x Peanut Prism 1 x Cover