In the early 1900s this firm made the "Portland Picket Pointer", a machine dedicated to pointing picket fence stakes. The also made the "Portland Meter", a device that, when installed on a planer, kept track of the lineal feet of stock. The picket pointer seems to have been a relatively short-lived product and the company specialized in metering devices for various industries. Adde & Co. survived until at least the 1970s.

From 1904-12-15 St. Louis Lumberman

Based on patent records it appears that the company founder was S. Adolf Adde. The machine designers were Arvid Ek and Emil Ek.

Information Sources

• The 1907 Annual Report of the Maine Board of State Assessors lists Adde & Co. as having a capitalization of $3,000.
• The 1908 and 1909 editions of Annual Report of the Maine Board of State Assessors lists Adde & Co. as having a capitalization of $10,000.
• Advertisements for the Portland Meter in 1919-20 issues of The Timberman.
• Biennial Report of the State of Maine Department of Labor and Industry for 1919-1920 lists Adde & Co., machinery, at 59 Kennebec in Portland, with 4 employees, all male.
• A 1977 issue of Chilton's Instruments & Control Systems lists this firm as a maker of panel meters and counters.