1. A method for practically, efficiently and inexpensively measuring a parameter of a product in the field to produce a product condition report containing objective documentation of the condition of that product, comprising: a) taking measurements of a predetermined parameter of said product using a pocket-size, battery-powered measurement instrument, b) automatically storing said measurements in a memory in said instrument in a data set of one or more of said measurements, c) starting a product data set application program in a pocket-size, battery- powered device having a wireless receiver and an electronic circuit that wirelessly transmits data to a network, d) transmitting said data set wirelessly from said measuring instrument to said device, e) receiving said data set with said device, f) transmitting said product data set from said device, and g) receiving said labeled product data set into a remote computer or into a remote smartphone.