Whether it's for factory, lab or studio use, the GraLab 451 is an excellent choice. This dependable electronic timer is 100% solid state for digital accuracy and repeatability and its simple, practical design and highly visible two-digit LED display make time setting a breeze. The 99 minute time range can be set in minutes, seconds and 1/10 seconds and its dual memory switching timer has two independent, separately programmable memories allowing for operation as a single-cycle switching timer as well as an auto-start feature for continuous cycling.