Physical description

Single sheet of paper. Tests on material for 150 Breech blocks. for QF 17 PDR Guns.
From: Thompson's Engineering & Pipe Co. Ltd. dated 19/10/1942.
To: Ministry of Munitions A/C Ordnance Factory Maribyrnong.
The tests cover Breech Blocks.
(1508 - 1513) (1542 - 1547) (1554 - 1559)
(1560 - 1565) (1571 - 1575) (1582 - 1587)

Inscriptions & markings

Signed off at bottom by (??) Martin.