Blundell Harling Speed / Time / Distance Calculator Best Price: £10.49 from Gael Force Marine Buy for best price Description Speed / Time / Distance Calculator is an easy and accurate method of calculating distance. Simple to use slide rule. Calculates the third variable given the other two (distance covered, given speed and elapsed time). Outer sleeve manufactu .... Show All Prices ***************
Blundell Harling Speed / Time / Distance Calculator Best Price: £10.49 from Gael Force Marine Buy for best price Description Speed / Time / Distance Calculator is an easy and accurate method of calculating distance. Simple to use slide rule. Calculates the third variable given the other two (distance covered, given speed and elapsed time). Outer sleeve manufactu .... Show All Prices ***************
