Bosch Professional Aluminum Elevator Tripod with Adjustable Legs BT 250 COMPACT: The Bosch BT 250 is compact and lightweight with collapsible legs. At only 5 lbs. the tripod is easy to store and transport. PRECISION: The BT 250 offers precise graduations in centimeters, millimeters, feet and inches to help facilitate accurate changes in elevation of the tripod and instrument. SECURE: The collet locks provide firm positive locking action of the tripod while the rubber feet with retractable metal points offer added security. SMOOTH: The BT 250s gear and rack system allows for smooth, continuous motion while the vial level indicates out-of-level conditions. EXPANDABLE: The tripod is expandable up to 98.4 Inches making it the ideal tool for a variety of applications.