Instructions for the use of the Douglas-Schäfer sounding traveller.

Instructions for the use of the Douglas-Schäfer sounding traveller, Hydrographic Department publication; also letter from Commander H.P. Douglas to the father of Lieutenant J S Schäfer, 1912 (Formerly NVA/1)

Record Details

Item reference: NVT/39
Catalogue Section: Manuscript volumes acquired singly by the Museum
Level: ITEM
Date made: 1912-01-01 - ?; 1912
Credit: National Maritime Museum, Greenwich, London