Showing 63 items
matching measuring devices
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Vision Australia
Functional object - Object, Measuring aid, 1960-1980s
A wooden device that appears to have been used in a workshop. This device has a rotating pointer, hence it may have been used for balancing, measuring or alignment at the RVIB workshop.1 wooden board with metal attachmentassistive devices, royal victorian institute for the blind -
Forests Commission Retired Personnel Association (FCRPA)
Ventimeter, Wind anemometer in cardboard tube
Bushfire behaviour is influenced by many factors including temperature, relative humidity (RH), forest type, fuel quantity and fuel dryness, topography and even slope. But wind has a dominant effect on the Rate of Spread (ROS), as well as fire size, shape and direction. Wind speed can be measured using a variety of anemometers. This simple hand-held Venitimer was made by Elvometer in Sweeden, probably in the 1960s, and was designed for principally for mariners. Some models have a compass in the handle to measure wind direction. The small inlet hole on the side is faced towards the wind and air pressure lifts small plastic disk inside. The upper tube is tapered so that as wind speed increases more air escapes and stronger winds are needed to raise the disk. Wind speed in MPH is read from the side of the clear plastic tube. The waterproof container has instructions on use and conversion scales. Simple and robust device.Hand- held wind anemometer Instructions on use on containerbushfire, forests commission victoria (fcv) -
Department of Energy, Environment and Climate Action
map measuring wheels
The map wheel is a simple, fast and accurate way to measure distances on maps, whether in straight lines or along curves. Hold the device from the tip and trace with the small wheel at the bottom along the line to be measured Measures distances in miles, kilometres or nautical miles depending on the scale on the side.Two metal map measuring wheel sMap scales on each side of wheelforests commission victoria (fcv), surveying, mapping