2015. Forest pathologist Betsy Goodrich using a Resistograph to measure the amount of sound rind in an old growth Douglas-fir. Ohanapecosh Campground, Mt. Rainier National Park, Washington.
Forest pathologist Betsy Goodrich using a Resistograph to measure the amount of sound rind in an old growth Douglas-fir. Ohanapecosh Campground, Mt. Rainier National Park, Washington.
For more see Publications on Hazard and Danger Trees here: www.fs.usda.gov/detail/r6/forest-grasslandhealth/insects-...
Photo by: Connie Mehmel
Date: June 8, 2015
Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Wenatchee Service Center.
Source: Connie Mehmel collection. Wenatchee, Washington.
More about the Resistograph from Connie Mehmel:
"The Resistograph is described as 'an electronic high-resolution needle drill resistance measurement device, developed by Frank Rinn. A thin, long needle is driven into the wood. The electric power consumption of the drilling device is measured, recorded and printed,' making it more high-tech than the normal cordless drill we keep in our tool kit. This one was purchased by Mt. Rainier for their use. We enjoyed trying it out."
Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
2015. Forest pathologist Betsy Goodrich using a Resistograph to measure the amount of sound rind in an old growth Douglas-fir. Ohanapecosh Campground, Mt. Rainier National Park, Washington.
Forest pathologist Betsy Goodrich using a Resistograph to measure the amount of sound rind in an old growth Douglas-fir. Ohanapecosh Campground, Mt. Rainier National Park, Washington.
For more see Publications on Hazard and Danger Trees here: www.fs.usda.gov/detail/r6/forest-grasslandhealth/insects-...
Photo by: Connie Mehmel
Date: June 8, 2015
Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Wenatchee Service Center.
Source: Connie Mehmel collection. Wenatchee, Washington.
More about the Resistograph from Connie Mehmel:
"The Resistograph is described as 'an electronic high-resolution needle drill resistance measurement device, developed by Frank Rinn. A thin, long needle is driven into the wood. The electric power consumption of the drilling device is measured, recorded and printed,' making it more high-tech than the normal cordless drill we keep in our tool kit. This one was purchased by Mt. Rainier for their use. We enjoyed trying it out."
Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth