Jean_LAMESCH_Sliderules_Collection_BOX_JL10

1764_ARBED_axially_compressed_I_weakaxis

1764_ARBED_axially_compressed_I_weakaxis

A DIN A4 large nomogram with some moveable parts, to aid on the selection of I- format steel beams; duplex, strong plastic. Age 1983; made by the German company IWA, model IWA 09247. This item is for lighter compressions. ARBED was the main Luxembourg steel work company, later acquired by the Indian company MITTAL and renamed Arcelor-Mittal