Spectra Precision C70 Rod Clamp with Bubble Vial The Spectra Precision C70 Rod Clamp with Bubble Vial is a durable laser receiver mounting accessory designed for fast, secure attachment of compatible HL series and CR700 receivers to standard grade rods in surveying and construction layout applications. The integrated bubble vial provides quick visual leveling reference, while the clamp ensures stable positioning in demanding field conditions. Key Features • Compatible with HL700, HL750, HL760, CR700 receivers • Integrated bubble vial for quick leveling reference • Secure rod clamp design for stable field mounting • Durable, lightweight construction-ready accessory