Optical Level 90M, Stanley ST1-77-160

The STANLEY ST1‑77‑160 (AL24GVP Optical Level) is a manual optical leveling instrument built for precision and reliability. Designed for both construction and surveying tasks, it offers robust performance with a working range of up to 90 meters.

Key Features

• Working Range: Up to 90 meters, making it ideal for medium to large sites.
• Accuracy: Delivers ±1.6 mm precision at 45 meters, ensuring reliable measurements.
• Magnification: 24× magnification supported by a wire-hung, magnetically dampened compensator for stable readings.

Optics

• A large aperture offers clear visibility, even in lower light.
• The minimum focusing distance is approximately 0.3 meters, allowing work in tighter spaces.
• It features a penta prism and an easy-to-read horizontal circle, so users can quickly check the bubble and measure angles.

Focusing Mechanism

• The dual-sided friction-brake focusing knobs enable smooth and accurate adjustments, regardless of your dominant hand.

Durability and Protection

• The sealed housing is water-resistant and protects leveling screws from dust, making it suitable for rough environments.
• A compensator lock is included to protect internal components during transport.

Compatibility

• It uses standard 5/8″ × 11 threads, so it fits most surveying tripods on the market.

What’s Included in the Kit

To provide everything you need on-site, the ST1‑77‑160 kit includes:

• Optical level unit
• Aluminum tripod
• Measuring staff (rod)
• Plumb bob or line
• Protective hard case
• Lens cover
• Allen wrench and adjustment pin
• Instruction manual

Summary

In summary, the STANLEY ST1‑77‑160 (AL24GVP) is a rugged, accurate, and weather-resistant tool that’s built for field professionals. Thanks to its high magnification, stable performance, and complete accessory kit, it’s an excellent choice for surveyors and construction crews who need reliability and ease of use in one package.