A power saw comprising: a base structure including a generally flat top structure having an upper work surface with said top structure having an opening through which at least a portion of a circular blade can extend; a relatively narrow box-like undercarriage pivotably mounted to said base structure around a pivot axis located at an upper end portion of said undercarriage to provide an adjustable bevel angle of said blade relative to said top structure, said undercarriage being configured to have a motor saw assembly mounted thereto; and a motor saw assembly comprising an arbor shaft for mounting a circular blade thereon, a drive motor having an output shaft, characterized in that said output shaft extends generally parallel to the plane of said blade, said output shaft being oriented 90 degrees relative to said arbor shaft, wherein there is provided a speed reducing gear train interconnecting said output shaft and said arbor shaft, a gear housing enclosing said gear train, said motor saw assembly being adjustably mounted to said undercarriage to vary the portion of said blade that extends above said upper work surface; wherein said gear train comprises a two stage rotational speed reducing gear train comprising a first stage having a first bevel gear attached to said output shaft that meshes with a second bevel gear attached to a transverse shaft and a second stage having a first spur gear attached to said transverse shaft that meshes with a second spur gear attached to said arbor shaft, wherein said motor saw assembly comprises a frame structure comprising extensions and that operatively slides in an opening in a side wall of said box-like undercarriage, said arbor shaft and said blade being generally vertically adjustable to vary the portion of said blade that extends above said upper work surface, wherein said undercarriage further comprises a pair of spaced apart vertical rods on which said extensions of the frame structure are mounted and configured to vertically slide on, wherein the extensions each have a cylindrical opening configured to receive one of the rods. a base structure including a generally flat top structure having an upper work surface with said top structure having an opening through which at least a portion of a circular blade can extend; a relatively narrow box-like undercarriage pivotably mounted to said base structure around a pivot axis located at an upper end portion of said undercarriage to provide an adjustable bevel angle of said blade relative to said top structure, said undercarriage being configured to have a motor saw assembly mounted thereto; and a motor saw assembly comprising an arbor shaft for mounting a circular blade thereon, a drive motor having an output shaft, characterized in that said output shaft extends generally parallel to the plane of said blade, said output shaft being oriented 90 degrees relative to said arbor shaft, wherein there is provided a speed reducing gear train interconnecting said output shaft and said arbor shaft, a gear housing enclosing said gear train, said motor saw assembly being adjustably mounted to said undercarriage to vary the portion of said blade that extends above said upper work surface; wherein said gear train comprises a two stage rotational speed reducing gear train comprising a first stage having a first bevel gear attached to said output shaft that meshes with a second bevel gear attached to a transverse shaft and a second stage having a first spur gear attached to said transverse shaft that meshes with a second spur gear attached to said arbor shaft, wherein said motor saw assembly comprises a frame structure comprising extensions and that operatively slides in an opening in a side wall of said box-like undercarriage, said arbor shaft and said blade being generally vertically adjustable to vary the portion of said blade that extends above said upper work surface, wherein said undercarriage further comprises a pair of spaced apart vertical rods on which said extensions of the frame structure are mounted and configured to vertically slide on, wherein the extensions each have a cylindrical opening configured to receive one of the rods.