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2. 4-inch/40-caliber gun - Wikipedia

   en.wikipedia.org/wiki/4-inch/40-caliber_gun

   Gun No. 4, the first Mark 2, was completed in September 1890. [2] The Mark 3 Mod 0, M1890, would be the production version of the 4-inch/40 caliber bag gun with a total of 69 built in five Mods. The Mod 1 added a screw-box liner and chamber liner allowing it to use fixed ammunition along with only one hoop and a locking hoop and was hooped to ...

3. QF 4-inch naval gun Mk XIX - Wikipedia

   en.wikipedia.org/wiki/QF_4-inch_naval_gun_Mk_XIX

   8,870 metres (9,700 yd) at +40° [2] The QF 4-inch Mk XIX gun [ note 1 ] was a British low-velocity 4-inch 40- calibre naval gun used to arm small warships such as Bathurst and Castle-class corvette and some River-class frigate in World War II , mainly against submarines.

4. List of naval guns by caliber - Wikipedia

   en.wikipedia.org/wiki/List_of_naval_guns_by_caliber

   102 mm (4.0 in) BL 4 inch Mk VIII & XI 40-caliber United Kingdom: World War I - World War II 102 mm (4.0 in) BL 4 inch Mk IX naval gun 45-caliber United Kingdom: World War I - World War II 102 mm (4.0 in) QF 4 inch Mk I - III 40-caliber United Kingdom: 1895 - World War I 102 mm (4.0 in) QF 4 inch Mk IV, XII, XXII 40-caliber United Kingdom

5. Nominal Pipe Size - Wikipedia

   en.wikipedia.org/wiki/Nominal_Pipe_Size

   Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...

6. QF 4-inch naval gun Mk IV, XII, XXII - Wikipedia

   en.wikipedia.org/wiki/QF_4-inch_naval_gun_Mk_IV...

   The QF 4-inch gun Mk IV [note 1] was the main gun on most Royal Navy and British Empire destroyers in World War I. It was introduced in 1911 as a faster-loading light gun successor to the BL 4 inch Mk VIII gun. Of the 1,141 produced, 939 were still available in 1939. [1] Mk XII and Mk XXII variants armed many British interwar and World War II ...

7. Adrian sets tentative schedule for installing bollards downtown

   www.aol.com/lifestyle/adrian-sets-tentative...

   Work on installing the retractable bollards that will be used for closing downtown Adrian streets during events is scheduled to begin Monday, Aug. 28.