tm12 micro mast scissor lift the upright tm12 is a compact self-propelled lift that is perfect for maintenance duties. the battery powered mast lift can be driven through standard doorways and carried in passenger elevato......tm12 micro mast scissor lift the upright tm12 is a compact self-propelled lift that is perfect for maintenance duties. the battery powered mast lift can be driven through standard doorways and carried in passenger elevators yet will still lift two people with tools to a safe working height of 5.7 metres. it is ideal for a wide range of applications, including stock picking and record storage retrieval in offices and warehouses.