Vintage Starrett No. 104 Speed Indicator Mechanical Tachometer RPM Gauge USA
Overview & Specs
-
Brand: The L.S. Starrett Co. (Athol, Mass. U.S.A.)
-
Model: No. 104 Speed Indicator (Mechanical Shaft Tachometer)
-
Dial Range: 0–100 revolutions (registers up to 1,000 RPM)
-
Era: Early 20th Century (Circa 1900s–1940s)
-
Application: Engine rebuilding, lathe spindle speed testing, electric motor RPM checking, and vintage machine restoration.
Condition & Feature Notes
-
Mechanical: Free-spinning internal shaft and dial work smoothly as intended.
-
Surface Condition: Genuine antique toolroom patina with age-appropriate steel darkening and light surface wear.
-
Markings: Circular face stamp (THE L.S. STARRETT CO. ATHOL, MASS. U.S.A.) and dial graduations are clear and easy to read.
-
Ergonomics: Classic diamond-knurled body and textured teardrop handle for a secure grip during shop testing.
selling as pictured 090426 GP