14 in “Cooke’s Reversible” dumpy level with prismatic compass. 3-screw levelling head (c.1920).
For the tripod see https://ice-museum-scotland.hw.ac.uk/product/1973-007-1/.
Used for measuring vertical distances between point in conjunction with a levelling staff. This instrument was used for levelling in Edinburgh.
More infromation on this level can be found at https://www.civilengineeringx.com/construction/cookes-reversible-level/.