@article{oai:nipr.repo.nii.ac.jp:00001849, author = {Naruse,Renji and Shimbori,Kunio and Akitaya,Eizi and Suzuki,Yosio}, journal = {Memoirs of National Institute of Polar Research. Special issue}, month = {Dec}, note = {P(論文), A diameter gauge which has two diameter calipers 0.53m apart was developed for the Japanese Antarctic Research Expedition. Each caliper has three contact wheels which are spring-loaded through the supporting rods. The use of two calipers makes a better alignment between the axes of the hole and the gauge. Diameters in the range from 90 to 190mm can be measured with an accuracy of ±1.5mm.}, pages = {219--222}, title = {A tandem diameter gauge for use in Antarctic ice hole}, volume = {39}, year = {1985} }