Seco Tribrach Adjustor The Seco 2002-00 Tribrach Adjustor is designed for precise calibration of tribrach leveling vials and optical plummets, ensuring accurate instrument setup and reliable field performance. It features a very high precision 2 minute level bubble to provide a stable reference for checking and adjusting vial alignment, helping maintain proper leveling accuracy across surveying applications. Key Features • Designed for adjusting tribrach leveling vials and optical plummets • Helps maintain accurate leveling performance • Provides stable reference for calibration and verification • Compatible with standard tribrach systems • Durable construction for field and shop use