Pick the Right Drywall Type for Your Project. Homeowners can choose between fire- and moisture-resistant drywall, and select drywall thickness. When purchasing drywall for a home improvement project, homeowners can choose between drywall thickness and its ability to resist moisture and mildew.
The numbers you have indicated (4x32) are for a 4-power magnification (4x) riflescope with a 32mm objective (front) lens. You cannot make the scope stronger.2 means the diameter of the scope tube. Wider tubes gather more light, but this is mostly important for bigger magnifications. 4x32 is a common setup for a 22 rifle scope 3-9x40 is a common deer hunting scope.
Quora User, Digital photography since 2003... Optical zoom is a variable focal length lens, like a 15-85mm or 25-200mm lens. In an APS-C sensor DSLR camera, the standard or prime focal length is 35mm. Any focal length lower than this is called wide angle range. All the focal lengths above 35mm are called tele photo range.