Bofors 75 mm AA Gun
 

In 1927 Bofors had designed a new 75 mm AA gun wich was bought by the Royal Swedish Navy. This type was developed into a mobile AA gun known as the m/30 (1930).

I beleive 83 such guns were made of which the Swedish Army bought 19 pcs. 64 guns were exported to China, Persia (Iran) and Siam (Thailand).

I only know that Siam bought 8 pcs, but not how many that were exported to Persia and China.

Bofors 75 mm AA Gun M/1930
 

Another picture of the m/30.

Fire direction
 

Fire direction calculators were bought from Estonia. They were designed by Papello and called m/33 (1933). Sweden only bought five.

In 1936 a better model designed by Gamma and Juhaz in Hungary was bought and issued as m/36. One to a Bty of 3-4 guns.

Picture: FC M/1936.

Chinese 75 mm AA Gun
 

A 75 mm L/50 M/1930 AA gun in service with Chinese Armed Forces.