Negretti & Zambra Isothermal Altimeter c.1955 Tank later becoming the official historian

later becoming the official historian of the Rifle Brigade

AEROPLANES 1907-18

Although the design and dimensions of the Parkes version are very similar to the Barker sundials

the book was no doubt greatly influenced by Wolseley's own highly influential 1886 manual

The 1943 5th edition of the classic WW2 sniping handbook

Negretti & Zambra Isothermal Altimeter c.1955 Tank later becoming the official historianA very rare British military issue Negretti & Zambra precision Isothermal Altimeter, serial no. P 113135, made in England c. 1955. The altimeter has a 12cm (4. 75in) diameter white enamelled dial calibrated in metres, with the markings 'Height,' 'Metres' and 'Isothermal (50F) Metres, H=19075. 5 Log (29. 9 P),' a very finely made lightweight aluminium pointer, and a bevelled glass within a rotating bezel. The dial is signed 'Negretti & Zambra, London',