Engineer's Zeus Chart

An extremely handy pocket sized reference booklet of data charts and tables for the drawing office, tool room or workshop.<br> <br> This metric revision publication is produced by Zeus Precision Charts Ltd, who are members of the British Standards Institution.<br> <br> The 28 laminated pages contain data on standard drill sizes and decimal equivalents, tapping drills and clearances for metric and imperial threads, BS4500 tolerances, hardness comparisons, jig boring co-ordinates for equally spaced holes, allowances for sheet metal bending and Morse tapers.<br> <br> Also, long tables for sine, cosine, tangents and cotangents.