It can be used to compute a speed based on travel time or measure distance based on speed

OXYDO Full Rim Sunglasses -100% Authentic - OX 1015/S XUR8H

TOD'S Full Rim Frames - 100% Authentic - TO 5188 090

(SAVILE ROW) Full Rim Quadra Panto Polished 14ct White Gold Filled Frames

Matte havana brown gradient grey acetate frames

QUIKSILVER EQYEY03065/XBBK STANFORD 51mm Sunglasses Shades Eyewear Frames - New Crystal Grey It can be used toQUIKSILVER Full Rim Sunglasses 100% Authentic EQYEY03065 XBBK CAT. 3 STANFORD Matte transparent dark blue acetate frames Matte white acetate arms with full length QS logos Grey tinted lenses 100% UV protection Cat 3 Brand new Never been worn Lens Width = 51mm Frame Height = 46mm Bridge = 14mm Temple (Arm Length) = 145mm Measures 140. 5mm across the front, edge to edge SUPPLIED WITH AN UNBRANDED CASE AND PLAIN CLOTH HUGE SAVING ON RRP WORLDWIDE