This ingenious device offers a practical and economical solution for light measurements in a variety of learning situations.

• Display size is 2.5×2.5 cm
• Requires a 9 V battery (not included)

Whether measuring environmental light or quantifying an optical experiment, this compact luxmeter meets the need. For most uses, the autoranging feature makes this a one-button-and-done instrument. Readings stabilize quickly.

The auto power-off (after 5 minutes of no activity) conserves battery power, and for the times where more data is required, the MAX, MIN, HOLD, and difference functions are readily accessed.

A threaded socket for tripod mounting is provided on the back of the case. Silicon diode sensor has a diameter of 2.5 cm.