| 摘要 |
PURPOSE:To widen a temp. measuring range, by combining reversible heat- sensitive parts having different discoloration temps. and providing comparing color parts, wherein two or more kinds of elapse colors shown on the basis of temp. change by the heat-sensitive parts are selected, to each of the heat- sensitive parts. CONSTITUTION:Elapse colors discoloring by the rising in temp. are arranged on both sides of a heat-sensitive zone 1, wherein heat-sensitive tapes A-C having different discoloration temps. are arranged to the center of a reversible heat-sensitive label for measuring temp., in order from low temp. to form comparing color zones 2. A degree 3 of temp. when each of the elapse colors of the heat-sensitive tapes A, B, C becomes equal to the color of each of the comparing color zones 2 is displayed. When the temp. of an object to be measured is measured, the heat-sensitive tape showing the elapse color on the way of the discoloration of the color of the heat-sensitive zone 1 is found out and, by selecting the color nearest to said color from the comparing color zones 2, temp. is measured.
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