Physical description

The Mortar site assembly has a number of moving parts which all help with the firing of a Mortar.

Inscriptions & markings

On a small brass plate the numbers are Part No MAA3612 Reg B8926.
Other markings are Sight 3 in &SB 4.2 In Mortar MK 1 (Aust)
DDC2124-2 No 1210