Filar is a 5 letter English word. It's valid Scrabble word worth 8 points. It's valid Words with friends word worth 9 points.
You can make 73 anagrams from letters in filar (afilr).
1870-75; Latin fīl(um) a thread + -ar1
In the filar micrometer two spider lines are parallel, and one intersects them at right angles.
To Bouguer in 1748 is due the true conception of measurement by double image without the auxiliary aid of a filar micrometer, viz.
Transit Instrument, with reversing arrangement, illumination with oil or electric lamp, filar micrometer with two eye pieces.
Place the filar micrometer and the stage micrometer in their respective positions.
It can be used to measure the angular distance between objects too far apart for the filar micrometer.
(c) By means of the filar Micrometer (Ramsden's micrometer eyepiece).