Proof and Experimental Establishment, Shoebury Garrison, Old Ranges, Former Light Quick Firing Battery

The Proof and Experimental Establishment at Shoebury Garrison, specifically the former Light Quick-Firing Battery, dates back to the 1870s and was remodeled in the early 1890s. This disused structure features stock brick construction with an iron frame and 20th-century rendering on the upper part. It consists of two chambers set at an angle.

On the right side, there are massive piers with black brick quoins flanking the iron frame, which has three bays. A wooden door frame, currently without a door, is positioned between two upright girders that support the wall plate. The roof is iron-clad and barrel-vaulted, with a mantle rail above a blocked casemate, and part of the original plank floor remains.

The left side has been truncated and re-fronted in yellow brick, featuring a four-course relieving arch above a small wooden door frame. Buttresses at the left corner show traces of high brick arches that have since been demolished. This side also has a three-bay barrel-vaulted roof with brick infill and a 20th-century brick partition.

This structure is noted as an interesting late example of a casemate and is unique for being referred to as an "experimental casemate" in contemporary documents. A photograph from around 1896-1898 illustrates the arrangement of rifle muzzle loading guns on the pier.