To ensure heights and finished floor level (FFL) in door and window frames are securely marked

barriers and machines are lit

mm indication of the difference between laser plane and "0" level

for measuring arm

yellow and red

ram b 189bu 3 To ensure heights and finishedThe RAM B 189BU consists of a dual 3. 3" twist lock suction cup base. Included is a hole pattern that allows it to attach to any RAM base that features the universal AMP hole pattern. RAM Twist Lock Dual Suction Cup Base is ideal for vehicle windows and other non porous surfaces Includes plate adapter with the universal AMPS hole pattern compatible with a variety of RAM bases Made of high strength composite and powder coated steel for durability and