Easy-to-use Land Area and Slope Indicator gives you quick and easy measurements. Designed for use on USGS 7.5- and 15-minute series maps. Scales for 15-minute series: 1:62,000 or 1" =1 mile; 7.5-minute series: 1:24,000 or 1" = 2000'. The 15-minute scales are printed in red, and 7.5-minute are printed in black. 4-1/2"H x 6"W.
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