11. IOR/L/MIL/7/1121 Reference (shelfmark): IOR/L/MIL/7/1121 Title: Collection 16/11 Watkin range finder: adoption for infantry and cavalry. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1890 Extent: 1 file
12. IOR/L/MIL/7/1122 Reference (shelfmark): IOR/L/MIL/7/1122 Title: Collection 16/12 Watkin range finder (Mekometer): trial with mountain batteries. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1889-1892 Extent: 1 file
13. IOR/L/MIL/7/1123 Reference (shelfmark): IOR/L/MIL/7/1123 Title: Collection 16/13 Watkin depression range finder. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1895-1898 Extent: 1 file
14. IOR/L/MIL/7/1124 Reference (shelfmark): IOR/L/MIL/7/1124 Title: Collection 16/14 Mekometers for cavalry regiments. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1899 Extent: 1 file
15. IOR/L/MIL/7/1125 Reference (shelfmark): IOR/L/MIL/7/1125 Title: Collection 16/15 Provision of one-man range finders of Barr & Stroud pattern. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1912-1914 Extent: 1 file