† outkeepern.
Surveying. Obsolete.
A small graduated disc which turns as a length is marked out with a surveyor's chain, giving a measure of the distance covered.
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the world > the earth > earth sciences > geography > map-making > surveying > [noun] > surveying instruments > other surveying instruments
quadrat?c1400
trigon1590
square1600
peractor1616
definitor1664
Marquois scale1783
topograph1865
outkeeper1868
aba1876
1868 W. M. Gillespie Treat. on Land-surv. (ed. 8) 425 (advt.) Outkeeper, for keeping tally. $1 75.
1875 E. H. Knight Amer. Mech. Dict. II. 1582/1 Outkeeper, a small dial-plate having an index turned by a milled head underneath, used with the surveyor's compass to keep tally in chaining. The dial is figured from 0 to 16, the index being moved one notch for every chain run.
This entry has been updated (OED Third Edition, December 2004; most recently modified version published online December 2021).
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