Home > Equipment > Navigators > Navigation Aids
Availability:
Exclusively based on the scale of 1:25 000 (2 1/2" to the mile) and 1:50 000 (1 1/4" to the mile)
2 1/2 kilometres square to 1:25 000 (approx 1 1/2 miles) and 5 kilometres square to 1:50 000 (approx 3 miles)50 metre radius (cut out) to 1:25 000 scale, 100 metre radius (cut out) to 1:50 000 scale.100 metre radius (cut out) to 1:25 000 scale, 200 metre radius (cut out) to 1:50 000 scale.150 metre radius (cut out) to 1:25 000 scale, 300 metre radius (cut out) to 1:50 000 scale.200 metre radius (cut out) to 1:25 000 scale, 400 metre radius (cut out) to 1:50 000 scale.250 metre radius (cut out) to 1:25 000 scale, 500 metre radius (cut out) to 1:50 000 scale.Precision Engineered.Hole for neck cord.Basic Roamer logo reminds you to plot Eastings followed by Northings.Conversion: metres to feet/feet to metres.1:25,000 scale with 1/10 divisions of 10ths1:50,000 scale with 1/2 divisions of 10thsAverage Speed Formulae.