CENTERBOOK, CT—Essex Products Group (EPG) has signed a letter of agreement to purchase GRIPdigital, which specializes in color and production measurement hardware and software. EPG is expanding its KeyColor line to include color measurement products. Greg Imoff, who founded GRIPdigital in 1998, joins EPG as director of color solutions to drive the company’s new color measurement product development and global sales. EPG manufactures and integrates closed-loop color control systems.