Leica Style
L-Bar GMP104 Monitoring Mini Prism – 10 pcs
The GMP104 Monitoring Mini Prism is a durable, high-precision compatible with Leica, Trimble, and Topcon total stations, offering versatility and weather-resistant performance for monitoring and surveying tasks.
$430.00
SKU: MPR06
Secure checkout available with major credit cards, Apple Pay, Google Pay and Shop Pay.
Product Highlights
- High Accuracy: Provides up to 1mm precision and 5 arcseconds beam deviation for reliable measurements.
- Versatile Compatibility: Works seamlessly with Leica, Trimble, and Topcon total stations.
- Dual Prism Constants: +8.94mm for Leica and -25.46mm for other total stations.
- Durable Design: K9 glass prism with a stainless steel screw and metal holder for long-lasting performance.
- Weather-Resistant: Waterproof and dustproof, suitable for all weather conditions.
Overview
The GMP104 Monitoring Mini Prism is a versatile replacement model designed for use with Leica, Trimble, and Topcon total stations. With its K9 glass construction and L-bar, 90-degree circular shape, this prism ensures high precision with an accuracy of up to 1mm and a working range of up to 600m (2,000 ft). Featuring dual prism constants (+8.94mm for Leica and -25.46mm for others), a copper coating, and a durable waterproof and dustproof design, it is ideal for monitoring and surveying in all weather conditions.
Specifications
| Model | GMP104 Regular |
|---|---|
| For Total Station | Leica, Trimble, Topcon-compatible |
| Height Offset | 30.0mm |
| Prism Constant | +8.94mm (Leica), -25.46mm (Others) |
| Beam Deviation | 5 arcseconds |
| Working Range | 600m (2,000 ft) |
| Mount | Stainless steel screw with metal holder |
| Material | K9 glass |
| Coating | Copper |
| Package | 10pcs |
Features
High Accuracy
Provides up to 1mm precision and 5 arcseconds beam deviation for reliable measurements.
Versatile Compatibility
Works seamlessly with Leica, Trimble, and Topcon total stations.
Dual Prism Constants
+8.94mm for Leica and -25.46mm for other total stations.
Durable Design
K9 glass prism with a stainless steel screw and metal holder for long-lasting performance.
Weather-Resistant
Waterproof and dustproof, suitable for all weather conditions.
Efficient Package
Includes 10pcs of 1-inch L-bar reflector assemblies, providing excellent value.
Copper Coating
Enhances reflectivity and protects the prism from wear.
Compact and Portable
Lightweight design for easy deployment in the field.
Frequently Asked Questions
Reviews
Previously published reviews
4⭐️⭐️⭐️⭐️⭐️ E. Sanchez – Verified Buyer – January 19, 2025
"Definitely recommend to fellow surveyors, it gets the job done."
⭐️⭐️⭐️⭐️⭐️ T. Scott – Verified Buyer – November 19, 2024
"The prism provides consistent results. It integrates with my system as expected and meets good standards."
⭐️⭐️⭐️⭐️⭐️ H. Wood – Verified Buyer –October 1, 2024
"The GMP104 Mini Prism is an excellent choice. It offers precise measurements and integrates smoothly with my monitoring setup. Very pleased with the results!"
⭐️⭐️⭐️⭐️⭐️ C. Garcia – Verified Buyer – August 18, 2023
"Highly recommend it!"
⭐️⭐️⭐️⭐️ L. Hill – Verified Buyer – April 27, 2022
"It performs adequately and fits with my existing setup without any issues."
Compare similar equipment
A structured side-by-side of comparable options in this category to help you choose the right setup for your workflow.
| Specification | This product | |||
|---|---|---|---|---|
| Brand | Leica Style | Metricop | Trimble Style | Metricop |
| Price | $430.00 | $280.00 | $180.00 | $245.00 |
| Availability | In stock | In stock | In stock | In stock |
| Product Type | Surveying Prism | Surveying Prism | Surveying Prism | Surveying Prism |
| Recommended Use | Monitoring projects | Monitoring projects | Monitoring projects | Monitoring projects |
| Software Included | — | Yes | — | — |
| Package Type | — | — | — | Complete Set |
| Delivery Time | 4–7 business days | 4–7 business days | 4–7 business days | 4–7 business days |
Need help choosing the right equipment?
Our team can help compare models, confirm compatibility, and prepare an official quotation.
Related products

Metricop
Monitoring Ball Prism with Magnetic Base
The Monitoring Ball Prism MB01 is a stainless steel, magnetic-base prism compatible with Leica and non-Leica systems. With a prism constant of +17mm/-17mm, 3 arcsecond accuracy, and user-friendly features, it is ideal for precise measurements in various surveying applications.

Trimble Style
Trimble Survey Yellow Monitoring Prism
The Trimble Monitoring Prism is a durable, high-precision tool designed for Trimble total stations, offering exceptional accuracy and reliability for professional surveying applications.

Metricop
Yellow Monitoring Mini Prism, 5pcs In Package
The Yellow Monitoring Mini Prism offers precision measurements, a 500m working range, and compatibility with Leica total stations. Its durable plastic frame and bright yellow design ensure reliability and visibility, with each package containing 5 pieces for cost-effectiveness.

Leica Style
L-Bar GMP104E Monitoring Prism with Yellow Circle – 10 pcs
The GMP104E Monitoring Prism with Yellow Reflective Circle delivers 5 arcsecond accuracy, a 30.0mm height offset, and compatibility with Leica and other total stations. Its durable construction and yellow reflective circle make it a reliable tool for precise monitoring and surveying.
Need help choosing the right equipment?
Request a professional recommendation from Metricop. Our surveying engineers will help you select the right solution and prepare an official quotation.