Product Information

Professional Survey Prism for Precision Measurement

Name: Topcon Yellow Survey Circular Prism
Brand: Topcon Style
SKU: STD10
Price: 155.00 USD
Availability: InStock

The Topcon Yellow Survey Circular Prism delivers consistent accuracy for professional surveyors demanding reliable measurements across diverse field conditions. Built with precision-engineered optics and robust construction for long-term field use.

Precision Engineering

Engineered with a 100mm height offset and -30/0mm prism constant, this circular prism ensures measurement consistency across different total station configurations. The 5 arcsecond beam deviation specification provides the precision balance needed for both routine surveys and critical measurement applications.

Field-Ready Durability

Constructed with durable metal housing to withstand demanding field conditions while maintaining optical integrity. The included carrying bag ensures secure transport and storage, protecting your investment between job sites and extending service life.

Key Advantages

Standard 100mm offset eliminates measurement corrections
Wide circular design increases target acquisition speed
Consistent -30/0mm prism constant across instruments
Protective carrying bag included for field mobility
Metal construction withstands harsh environmental conditions

Model: Topcon Circular Prism

For Total Station: Topcon-compatible

Height Offset: 100.0mm

Prism Constant: -30/0mm

Beam Deviation: 5 arcseconds

Material: Metal

Carrying Bag: Yes

Features :

100mm Height Offset

Precise 100mm offset ensures seamless integration with total stations and survey systems.

-30/0mm Prism Constant

Dual constant options provide flexibility for various measurement requirements.

Premium Metal Construction

Robust metal housing withstands harsh field conditions and heavy daily use.

High-Visibility Yellow Design

Bright yellow color ensures easy visibility and target acquisition in all conditions.

Superior Reflectivity

Enhanced reflective surface delivers accurate readings at extended distances.

Protective Carrying Bag

Includes durable carrying case for secure transport and professional storage.

Circular Prism Design

Standard circular configuration ensures compatibility with all major survey instruments.

Professional Grade Quality

Topcon engineering delivers the precision and reliability professionals demand.

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Reviews :

4.8/5

★★★★★

Based on verified reviews

★★★★★

Michael Rodriguez

Senior Land Surveyor · Verified Purchase

Outstanding Precision and Build Quality

This Topcon circular prism has exceeded expectations in terms of accuracy and durability. The -30/0mm prism constant provides consistent results across various measurement scenarios, and the 100mm height offset is perfect for our standard pole configurations. The robust metal construction has withstood harsh field conditions without any degradation in performance.

★★★★★

Sarah Thompson

Construction Project Manager · Verified Purchase

Reliable Performance in Demanding Environments

We've been using this prism for large-scale construction layout work and it consistently delivers accurate measurements. The yellow coating provides excellent visibility even in challenging lighting conditions, and the included carrying bag ensures safe transport between job sites. Highly recommend for professional applications requiring dependable reflectance.

★★★★☆

David Chen

Civil Engineering Technician · Verified Purchase

Solid Choice for Routine Survey Work

This prism performs well for our daily topographic and boundary surveys. The metal construction feels sturdy and the optical quality is excellent for our Topcon total station setup. The only minor issue is that the carrying bag could have better padding, but overall it's a reliable piece of equipment that integrates seamlessly with our existing workflow.

★★★★★

Jennifer Walsh

Geodetic Surveyor · Verified Purchase

Exceptional Accuracy for Precision Measurements

The precision of this circular prism is remarkable for control network establishment and cadastral surveys. The consistent prism constant allows for reliable distance measurements without the need for frequent calibration checks. The bright yellow finish maintains excellent reflectivity over extended use, making it an invaluable tool for high-accuracy surveying applications.

★★★★★

Robert Martinez

Principal Surveyor · Verified Purchase

Professional Grade Equipment at Its Best

After 18 months of regular use across multiple projects, this prism continues to deliver exceptional performance. The durable construction has withstood drops and rough handling typical in field environments, while maintaining optical clarity and measurement accuracy. The protective carrying case is a thoughtful addition that extends the equipment's longevity.

What's in the Box

Everything you need to get started.

✓ 1× Topcon Yellow Circular Prism Assembly
✓ 1× Metal Prism Holder with 100mm Height Offset
✓ 1× Protective Carrying Bag

Note: Prism pole and other mounting accessories sold separately.

Frequently Asked Questions

General

✓ What is the prism constant for this circular prism? ▾

The Topcon Yellow Circular Prism features a prism constant of -30/0mm, which ensures accurate distance measurements when used with compatible total stations and EDM instruments. This constant must be properly configured in your surveying instrument for precise calculations.

✓ What is the height offset specification? ▾

This prism provides a 100mm height offset from the mounting point to the optical center. This standardized offset allows for consistent elevation measurements and must be accounted for in your surveying calculations to ensure accurate vertical positioning.

✓ Is this prism compatible with all total station brands? ▾

Yes, the Topcon Yellow Circular Prism is designed to work with total stations and EDM instruments from all major manufacturers, including Topcon, Leica, Trimble, Sokkia, and others. The standard circular design and reflective properties ensure universal compatibility across different surveying platforms.

✓ What construction materials are used for durability? ▾

The prism features robust metal construction designed to withstand harsh field conditions, temperature variations, and regular handling. The durable housing protects the optical elements while maintaining precision reflective properties, ensuring long-term reliability in professional surveying applications.

✓ What accessories are included with the prism? ▾

The prism comes with a dedicated carrying bag that provides protection during transport and secure storage when not in use. This padded case helps prevent damage to the optical surfaces and ensures the prism remains calibrated and ready for field deployment.

Still have questions? Contact our technical support team.

Shipping:

Origin: We fulfill orders from our global logistics network / production centers.
Typical delivery times:
- US & EU: 7–12 business days
- Global: 10–15 business days
Tracking: Every shipment includes end-to-end tracking.
Duties & taxes: Calculated at checkout where available, or payable upon import per local rules.
Dispatch time: Usually 1–3 business days after order confirmation (we’ll notify you if an item needs extra prep).
Partial shipments: If a multi-item order is ready in stages, we may ship available items first.

Returns:

Return window: 14 days from delivery for unused items in original packaging (exceptions: consumables and custom builds).
Return address: We’ll provide a regional return address when you open an RMA (US or EU where applicable).
Refunds: Processed within 5–7 business days after inspection.
Exchanges: Fast replacement dispatch once the RMA is approved.

Warranty & Service:

Coverage: All instruments include manufacturer warranty.
Support: Remote onboarding (setup call + quick-start materials) and priority email support.
Repairs & calibration: We coordinate with authorized service partners as needed.

Support

Manufacturer warranty: All instruments include official warranty per brand policy.
Remote onboarding: We help you get started—video call + setup checklist + quick-start PDF.
Technical support: Priority email response; diagnostic help for connectivity, firmware, and workflows.
Repairs & calibration: We route service through authorized partners; we’ll coordinate logistics and keep you updated.

FAQ

Q: Where are you located?
A: Metricop is a specialized online store registered in the US & EU. We ship globally with tracking.

Q: Where do you ship from?
A: From our global logistics network / production centers. Typical delivery for US/EU is 7–12 business days (global 10–15).

Q: Do you offer warranty?
A: Yes - manufacturer warranty on all instruments. We also provide remote onboarding and coordinate service with authorized partners.

Q: How do returns work?
A: Start an RMA within 14 days of delivery. We’ll provide a regional return address (US/EU where applicable).

Q: Can I get a formal quote?
A: Yes - use Request for Quote. We typically reply within 2 business hours.

Q: Payment methods?
A: Major cards and bank transfer. For business purchases we provide tax-compliant invoices.

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