- stenometer
- \\stə̇ˈnäməd.ə(r), -mətə-\ noun
Etymology: sten- + -meter: an instrument for measuring distances consisting of a telescope mounted on a tripod and fitted with a micrometer screw so that the distance may be measured to a rod carrying two targets a known distance apart whose images are brought together in the telescope by the micrometer screw
Useful english dictionary. 2012.