This original WW2 British Army Mk III prismatic compass is a genuine wartime example dated 1941 and manufactured by T. G. Co. Ltd of London, a recognised War Office contractor for precision navigation instruments. The Mk III pattern was the standard British Army service compass of the early and mid-war period, widely issued to infantry, engineers and training units, and played a vital role in navigation, map reading and field instruction throughout the Home Front during Britain’s wartime mobilisation.

The compass retains its correct brass body with concentric strengthening rings, prismatic sighting system and original enamel degree ring, all consistent with wartime Mk III production. The rear of the casing is clearly marked with the Broad Arrow ownership stamp, the maker’s London marking, and the 1941 date, firmly placing this piece within the critical early-war period. The compass shows the honest signs of service use expected from an original wartime instrument, with natural patination and wear that reflect genuine period handling rather than later refurbishment.

Accompanying the compass is its original wartime webbing pouch, correct for Mk II and Mk III prismatic compasses. Constructed from heavy khaki cotton webbing with period-correct brass fittings and press-stud closure, the pouch displays appropriate age, wear and staining consistent with Home Front service. The compass fits correctly within the pouch, forming a well-matched and authentic set as encountered during the Second World War.

Together, this compass and pouch form an excellent WW2 Home Front navigation set, representative of the equipment issued to British forces during training and domestic service. A strong, honest example with clear markings and correct components, it would make a fine addition to any British Army, navigation or Home Front militaria collection.

There is some staining on the front of the pouch, but the press stud works exactly as it should. Although it is a tight fit, the compass sits correctly inside the pouch and the flap closes securely. There is a small dent to the front of the pouch button, which is very common for this type of press stud, especially considering how firmly it must be pushed to close. The compass itself is in good condition, un-cleaned and in perfect working order. The glass is intact and the “spirit liquid”, as it was often referred to in period manuals, has not leaked or stained over the years. This is a very desirable piece, and the photographs speak for themselves when it comes to the quality and appeal of this genuine wartime set.