Customize Consent Preferences

We use cookies to help you navigate efficiently and perform certain functions. You will find detailed information about all cookies under each consent category below.

The cookies that are categorized as "Necessary" are stored on your browser as they are essential for enabling the basic functionalities of the site. ... 

Always Active

Necessary cookies are required to enable the basic features of this site, such as providing secure log-in or adjusting your consent preferences. These cookies do not store any personally identifiable data.

No cookies to display.

Functional cookies help perform certain functionalities like sharing the content of the website on social media platforms, collecting feedback, and other third-party features.

No cookies to display.

Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics such as the number of visitors, bounce rate, traffic source, etc.

No cookies to display.

Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.

No cookies to display.

Advertisement cookies are used to provide visitors with customized advertisements based on the pages you visited previously and to analyze the effectiveness of the ad campaigns.

No cookies to display.

Ball Prism – 1.5″ (38.1mm) Diameter

The 3490-25 ball prism is a stainless steel ball prism of 1.5” (38.1 mm) with a 25.4mm glass triple prism. The Prism constant is K = -16.9 (Swiss-style K= +17.5) mm. This diameter of 1.5“ (38.1 mm), is based on reflector balls from laser tracking applications. The ball prism monitoring system thus enables highly accurate tachymetric precision measurements (bases are sold separately.)

– Shockproof and waterproof
– Visible prism center

SKU: 3490-25 Category:

Description

Shipping: 1-2 weeks*. Check our Frequently Asked Questions page for more information.

Return: 14 days money back  from the date of purchase. Buyer pays return shipping. 15% restocking fee may apply. For details to request a Return Goods Authorization (RGA), please visit the Terms and Conditions page.

Warranty: Omni Survey offers a limited warranty against manufacturers defects of up to 2 years depending on the product. Please visit our Terms and Conditions section.

*Shipping times are an estimate and cannot be guaranteed. More accurate expected shipping times and delivery details are provided when an order is placed.