Abstract: The accessary for attenuated total reflection infrared spectroscopy comprises a condenser mirror, a crystalline element, a sample-supporting portion holding the crystalline element, an objective mirror, and a slit. The crystalline element has an incident surface, a totally reflecting surface, and an exit surface. A sample to be investigated is contacted with the totally reflecting surface The focused point of the infrared radiation from the condenser mirror is at the point of measurement on the totally reflecting surface of the crystalline element The focus of the objective mirror can be brought to the point of measurement on the sample surface. A point analysis, line analysis, or area surface on the order of 10 .mu.m can be made while observing the sample with the naked eye with the objective mirror. The invention further includes improvements in the mechanism for automatically adjusting the focus of the objective mirror when the measurement point is changed.

Abstract: A pre-coated metal sheet is prepared by coating a metal sheet with an acrylic resin comprising a dispersion of a granular rubbery material in an acrylic-based resin matrix which acrylic-based resin matrix contains monomer units having functional groups which cross-link upon heating.