TRU-FLARE Whistle Signal Cartridges (Box of 6) tags Battery 1 x 1

Battery 1 x 1

but it is of course possible to measure any preferable height

Made from recycled plastic bottles

and the map scales and UTM grids are in several common international map scales

TRU-FLARE Whistle Signal Cartridges (Box of 6) tags Battery 1 x 115mm Whistle Cartridge for Remote Wildlife Deterrence The 15mm Whistle Cartridge for Pen Type Flare Launcher is a signal cartridge designed for discouraging dangerous wildlife from approaching at distance. Wildlife control personnel, forestry workers, and site supervisors typically use this whistle cartridge flare to create a loud high pitched screeching sound during outdoor encounters. Tru Flare cartridges fit compatible pen type flare launcher