SPER Scientific Timers Certified Large

SPER Scientific Timer, Pocket, 2-1/2 X 2-1/2 X 1/2 In, 100 Minutes Range, 1 Second Resolution, 3/4 In H Digit Large Display, 1 Count Up And 1 Count Down Channel, 2.4 Oz Weight, With One Aaa Battery, Nist Traceable Certified, Small, Easily Portable, Auto Power-Off, Short Warning Alarms At 3 And 5 Minutes Prior To Final 30 Second Alarm, Automatically Records Elapsed Time Following The Alarm For Upto 20 Minutes, Or Until Stopped, Memory Recalls The Last Timer Setting For Repetitive Tests, Has Built-In Stand, Pocket Clip And Magnetic Back - SPER