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A Comparison of the Wira Type Density Caliper with the Electric Density Clipper

United States Department of Agriculture¹

Abstract

Conclusions: The electric clipper and the Wira caliper for determining density of fleeces have been compared, and it is evident that both instruments may have a useful place in sheep breeding research. With the density clipper satisfactory samples may be obtained more rapidly and with much less skill on the part of the operator than by the density caliper. The Wira caliper is more accurate and can be used in sampling small numbers of sheep, although either instrument may be used with satisfactory results. However, with large flocks of sheep, the speed required would necessitate use of the density clipper, even though some accuracy must be sacrificed. Further work is needed to test the possibility of increasing accuracy with the electric clipper by sampling a larger area.

¹ Agricultural Research Center, Beltville, Maryland.