Primary Concepts HourGlass Classroom Timer and Noise Meter (discontinued) theme-fish These pads

These pads

The device comes with a wall mounting slot and magnets

Jacketed hardcover binding

Trucky 3 is a fun

Primary Concepts HourGlass Classroom Timer and Noise Meter (discontinued) theme-fish These padsHourGlass is a dual function classroom management system that can be used as a Timer and as a Noise Detector. The giant display of lights is a dynamic measuring tool that can be seen by everyone in a classroom or even an auditorium. One year unconditional warranty. Requires 4 C batteries or optional AC adaptor (sold separately). Battery life in a typical classroom operation is 6 months 2 years, but varies according to usage. 15 x 8 x 4. 5. Instruction