Democratic Sentinel, Volume 20, Number 45, Rensselaer, Jasper County, 13 November 1896 — Measuring the Interior of Buildings. [ARTICLE]

Measuring the Interior of Buildings.

A simple method of measuring heights in the interior of churches and other buildings consists in attaching a graduated string or tape to a small balloon such as is easily obtainable anywhere. This method might also be readily applied for measuring tltte height of caverns.—Prometheus