Produced to the US standard (0.02mm tolerance), these handy squares have cast-iron machined bases with satin ground blades. The handle can be positioned anywhere along the blade to use as a layout tool as well as a precision square. The blades are graduated in imperial on both sides.
The square with the 4in-long blade has a handle with a usable inside height of 49mm and the cross-sectional size of it is 28 x 14mm.
The square with the 6in-long blade has a handle with a usable inside height of 78mm, with a spirit level built into it to aid in it being used as a small spirit level. The cross-sectional size of the handle is 31 x 16mm.
Like all iGaging products, these are very well made and great to use.