This November 1977 Service Instruments Division roster details the organizational structure and employees. Co-founder Ed Sinclair is listed as the Accessory Products Marketing manager.

 

This 1978 organization chart shows the Test & Measurement group's divisional structure under Bill Walker. Click on the image to view the PDF.

 

This September 9, 1989 TekWeek organization chart shows the Test & Measurement group's divisional structure under Dick Knight.  Click on the image to view the PDF.