thumb|Dasymeter at standard pressure thumb|Dasymeter at reduced pressure thumb|Historical drawing of a dasymeter (in German: "Fig. 109. Baroscope. (Apparatus for proving the buoyancy of air)")
thumb|Dasymeter at standard pressure thumb|Dasymeter at reduced pressure thumb|Historical drawing of a dasymeter (in German: "Fig. 109. Baroscope. (Apparatus for proving the buoyancy of air)")
A dasymeter was meant initially as a device to demonstrate the buoyant effect of gases like air (as shown in the adjacent pictures). A dasymeter which allows weighing acts as a densimeter used to measure the density of gases.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).