In at least one embodiment, the invention is a temperature sensor having a temperature sensitive material positioned within a shell. The footprint-providing device is connected via a network to a client terminal that views a Web page with a browser. Uses of the complexes in stoichiometric and catalytic reaction chemistry are also provided. The slide stop actuating structure is located at a front end of the base part and provides an inclined engagement surface that extends upwardly from the front end of the base part to a front edge of the follower. The support pole 35 is provided with a sliding attachment unit 35b to 35d that extends in the direction of the longitudinal axis and slides a mounting fixture for use in material testing to change a position at which the mounting fixture is attached. This process comprises the step of reacting a dried mixture comprising a pigment having attached at least one reactive group and a modifying agent.