Description
Scale rule in wood manufactured by WH Harling, London. The front scales are 1/8 = 1 Foot, 1/4 = 1 Foot, 1/2 = 1 Foot and 1 IN = 1 Foot. The back scales are 1 1/2 = 1 Foot, 3 IN = 1 Foot, 3/8 = 1 Foot and 3/4 = 1 Foot.
This item belonged to the donor’s father John Walker who was awarded a Higher National Certificate in Electrical Engineering by Heriot-Watt College in 1951. To see John Walker’s HNC Certificate click here.