Levelling staff of height 2 ft 9 in capable of being raised to 6 ft 3 in. It was designed for use in surveying in height restricted areas. and has a “roller blind” mechanism which means it can be extended to any length and still retain accuracy. At the top of the staff secured to the innermost section is a spring roller which allows the face to be unwound and rewound when the staff is raised and lowered respectively.
This staff was originally owned by Dudley Technical College and used to instruct students. It was “saved from the skip” by the donor when in 1968 the college disposed of its old mining surveying equipment.