An apparatus (100) such as a portable weight measuring device for the purpose of simultaneously determining weight and time data includes a container support member (104) having a container engagement portion (102) and a time-determining device (108). A weight-determining device (106) is mounted in the container engagement portion (102). The apparatus can includes data input and out devices, such as an optical connection (406) and a display (110). When a container, such as a piece of luggage, is engaged and lifted by the apparatus, the container weight along with the date and time are output on a display. When container weight exceeds a limit, a warning indicator (112) is activated.