Leica GMP111 Mini Prism with Holder The Leica GMP111 Mini Prism with Holder is a lightweight prism pole kit designed for surveying and construction applications, delivering portable prism positioning, reliable centring, and efficient field setup . The prism is mounted in a durable polymer holder with integrated circular bubble and includes the GLS115 four-section pole and point. Key Features • Mini prism with polymer holder and integrated circular bubble • Includes GLS115 four-section pole and point • 1/4" thread fitting for flexible mounting compatibility • Prism constant of +17.5 mm • Measurement range up to 2,000 m (6,600 ft)