Leica

Leica 840381 NA320 360-Degree Auto Optical Level

4.7 (234 reviews)

Leica NA320 Auto Optical Level offers 20x magnification and rugged, weather-sealed construction for reliable surveying.

$232.00*$260.00Save 10%
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Leica NA320 Auto Optical Level is engineered for surveying and construction professionals who require dependable leveling performance without unnecessary complexity. With 20x magnification and an automatic compensator, the NA320 lets operators take accurate elevation readings quickly — simply rough-level the instrument with the circular bubble, and the internal compensator handles the rest. The full 360-degree horizontal rotation means you can sight targets in every direction from a single setup position.

Built to endure the realities of active job sites, the NA320 features water-tight and dust-tight sealing along with impact resistance, so it keeps performing through rain, dust, and the occasional knock. The ergonomic yellow housing provides a secure grip and comfortable handling during long survey sessions. For construction firms and surveyors looking for a straightforward, durable optical level from a trusted brand, the NA320 delivers solid core performance at an accessible magnification level.

Key Features

Superior performance

20x magnification

Water- and dust-tight (IP) and Impact Resistant

Simple Operation

Ergonomic Design

Specifications

Brand
Leica Geosystems
Model
840381 (NA320)
Magnification
20x
Water Resistance
Water-tight (IP rated)
Dust Resistance
Dust-tight (IP rated)
Impact Resistant
Yes
Rotation
360 degrees
Color
Yellow
Level Type
Automatic Optical Level

Pros & Cons

👍 Pros

  • Water-tight and dust-tight IP rating ensures reliable operation in adverse weather conditions.
  • Impact-resistant housing protects the instrument from drops and bumps common on construction sites.
  • Full 360-degree rotation allows sighting in any direction without moving the tripod.
  • Simple automatic leveling reduces setup time and minimizes operator error.
  • Compact, ergonomic design is comfortable for extended field use.

👎 Cons

  • 20x magnification is on the lower end, which may limit clarity at longer sighting distances.
  • Optical-only design lacks digital measurement features found in more advanced models.
  • Tripod and leveling rod are not included and must be sourced separately.
  • No illuminated reticle, which can make readings difficult in low-light conditions.

Frequently Asked Questions

The NA320 provides 20x magnification, suitable for standard surveying and construction leveling tasks at common working distances.
Yes, the NA320 is rated as both water-tight and dust-tight with IP protection and impact resistance, making it well-suited for harsh outdoor environments.
It refers to the instrument's ability to rotate a full 360 degrees on its base for sighting targets in any direction without repositioning the tripod.
It is an automatic optical level, meaning its internal compensator automatically levels the line of sight after rough leveling with the circular bubble.