Gear Map measurer of the month: the Silva scale lanyard The scale lanyard from compass manufacturer Silva is an interesting innovation but ultimately a failure in design Map measurer of the month: the Silva scale lanyard
map measurer Map measurer of the month- the Mile-O-Graph The Mile-O-Graph is an intuitive map measurer introduced in the 1950s Map measurer of the month- the Mile-O-Graph
map measurer Map measurer of the month: The Roller Rule- “The Pencil with a Brain” The Roller Rule was invented by John Hoe Morehead of […] Map measurer of the month: The Roller Rule- “The Pencil with a Brain”
map measurer Map measurer of the month- The Self-Registering Rotameter This interesting little map measure has a stained and warped […] Map measurer of the month- The Self-Registering Rotameter
