What we have here is the impossible to find ABSOLUTELY MINT replacement knob and dial assembly for their Strobotac stroboscope instruments.

Mil surplus still sealed in original packaging. NSN is 6680-00-883-9555. Scale Mask Subassembly. P/N 1531-1060.

Mostly black plastic dial mask is approximately four inches in diameter by an eighth thick and has a sturdy "T" shaped black knob attached.

There are three clear windows that expose the "110-690 RPM", "670-4270 RPM", and "4000-25000 RPM", dial ranges. Three other unwindowed switch positions are for "EXT INPUT LOW INTENSITY 25000 RPM MAX", for "LINE/EXT INPUT MED INTENSITY 4000 RPM MAX" and "EXT INPUT LOW INTENSITY 25000 RPM MAX".

Replica PostScript artwork is available for other dials in this series. You could thus modify this dial to very nearly match the impossible to find ones. You can email for details.

Approximate shipping weight: 1 pound.
Available in quantity.