Scale: 1/700  
 
Includes 3 turrets with barrels.
 
This set of three-gun turrets (more properly called "gunhouses") represents the enormous main battery of the Iowa and Montana class battleships.

Dimensions:
Length: 22.8 mm
Turret apron diameter = 17.8 mm 
Mounting post diameter = 2.45 mm

Features:
dimensions scaled from scans of original builder's blueprints and confirmed by measurements taken from actual gunhouses on the real ships
Turret 1 does not have a rangefinder or armored rangefinder hoods
Turrets 2 and 3 have armored rangefinder hoods
armored rangefinder hexhead bolt and domed screw details
detailed rooftop periscopes
asymmetrical underside ventilation trunks (as-built 1943-1945 configuration)
 
© Model Monkey LLC. This 3D-printed product may not be copied or recast.
 
Regarding the Mark 7 gun, from Wikipedia: "These guns were 50 calibers long—or 50 times their 16-inch (406 mm) bore diameter which makes the barrels 66.6 feet (20 m) long, from breechface to muzzle. Each gun weighed about 239,000 pounds (108,000 kg) without the breech, or 267,900 pounds (121,517 kg) with the breech. They fired projectiles weighing from 1,900 to 2,700 pounds (850 to 1,200 kg) at a maximum speed of 2,690 feet per second (820 m/s) with a range of up to 24 miles (39 km). At maximum range the projectile spent almost 1½ minutes in flight. Each turret required a crew of 79 men to operate. The turrets themselves cost US$1.4 million each, to which the cost of the guns had to be added."