2530-15-068-0504

1240-21-887-3541 1240218873541 218873541 is a small transparent vessel, inclosing a liquid with an air bubble. it is the indicating part of a level. the item may be cylindrical in shape, or a comparatively flat, cicular item, but does not have a mounting hardware. for mounted items and items including mounting or mounting hardware, see level (as modified).

5365-12-123-2584 5365121232584 121232584 is a tubular shaped item with a round or hexagon peripheral shape having two flat bearing surfaces perpendicular to the axis of the centrally located hole. it is designed to maintain a predetermined distance between assembled parts. the item may be with or without flange(s) of any peripheral shape. the overall length must exceed 25 percent of the outside diameter or distance across peripheral flats of the body. (when the length, outside diameter, and/or distance across peripheral flats are designed as a tolerance, the maximum dimension will be used to determine compliance). for items having other than a round or hexagon peripheral shape, see spacer, plate. excludes items with lubricating features, see bearing, sleeve and bushing, sleeve. see also bushing, tapered; spacer, ring; washer, flat; and washer, (as modified).

1240-21-887-4498 1240218874498 218874498 BASE AND TELESCOPE

1240-21-887-4496 1240218874496 218874496 LIGHT SOURCE MOUNT

1240-21-887-4497 1240218874497 218874497 RING,INDEX,ASSEMBLY