The British Official Armour Specification is a set of standards for armour construction for armoured fighting vehicles prior to and into World War II.
Standards applicable to British tanks of World War II are as follows:
- I.T.60: Face-hardened 7 to 12 mm plate.
- I.T.70: Thin homogeneous hard 3 to 30 mm plate.
- I.T.80: Thick homogeneous-machineable 15 mm and greater plate.
- I.T.90: Cast armour of all thicknesses.
- I.T.100: Thin homogeneous-machineable 3 to 14 mm plate.
- I.T.110: Carbon manganese steel backing plate.
Read more about British Official Armour Specification: Resources
Famous quotes containing the words british, official and/or armour:
“It is very considerably smaller than Australia and British Somaliland put together. As things stand at present there is nothing much the Texans can do about this, and ... they are inclined to shy away from the subject in ordinary conversation, muttering defensively about the size of oranges.”
—Alex Atkinson, British humor writer. repr. In Present Laughter, ed. Alan Coren (1982)
“I thought it altogether proper that I should take a brief furlough from official duties at Washington to mingle with you here to-day as a comrade, because every President of the United States must realize that the strength of the Government, its defence in war, the army that is to muster under its banner when our Nation is assailed, is to be found here in the masses of our people.”
—Benjamin Harrison (1833–1901)
“Saint, do you weep? I hear amid the thunder
The Fenian horses; armour torn asunder;
Laughter and cries. The armies clash and shock,
And now the daylight-darkening ravens flock.
Cease, cease, O mournful, laughing Fenian horn!”
—William Butler Yeats (1865–1939)