Steel Square - Use Of The Scales, Roof Framing, Illustrative Problems And Other UsesEbookSteel Square - Use Of The Scales, Roof Framing, Illustrative Problems And Other UsesbyGilbert TownsendRating: 0 out of 5 stars0 ratingsSave Steel Square - Use Of The Scales, Roof Framing, Illustrative Problems And Other Uses for later