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Title Half-Inch Fuel-Moisture Sticks -- How They are Made
Catalog Number 2004.032.162
Object Name Article
Scope & Content Half-Inch Fuel-Moisture Sticks -- How They are Made 1953

Author Charles E. (Mike) Hardy describes the early development fuel moisture sticks and how the moisture sticks are made, Reprinted from Fire Control Notes, October 1953.

The idea of using sticks of known dry weight as a criterion of the moisture content of forest fuels was conceived around 1925. The purpose of indicator sticks is to evaluate the relative dryness of fuels as one essential step in fire-danger rating. Richard E. McArdle, now Chief of the United States Forest Service, developed the idea of 1/ 2-inch square sticks and doweling 3 sticks together. The late Harry T. Gisborne, in Region 1, tested natural branches, 2-inch dowels,1-inch dowels, and the square ones during the process of arriving at the present type of fuel moisture indicator sticks. Prior to 1942 sets of sticks were not trimmed to any particular oven-dry weight. Either a special scale had to be used or a conversion table prepared for each set. Starting in 1942, all sets were trimmed to exactly 100.0 grams, oven dry weight. This reduced computation work tremendously and minimized errors. It also meant that a set of fuel-moisture sticks could 1be used anywhere without having its little conversion chart tagging along.

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Creator Hardy, C E
Year Range from 1953
Year Range to 1953
People Hardy, Charles E.
McArdle, Richard E.
Gisborne, Harry T.
Subjects Fire danger
Fuel Moisture sticks
Fire Weather
Search Terms Fire-Weather
Catalog date 2005-11-04
Extent of Description 6.0" X 9.0", 8 pages
Collection Dieterich, John H