Product Description
This item is a Micro-Controle (also known as Klinger, and now manufactured by Newport) SL type Gimbal optic mount. The SL gimbals are characterized by massive steel construction with two mounting flats for orthogonal positioning of the tilting axes so the controls are on the right or left side of the beam path. The two planes of tilt perfectly intersect the plane of the optic (often a mirror) so adjusting azimuth or elevation results in the reflection point always being stationary on the optic axis. The elements are held in place by a spring-loaded ring. There are three small bearing points to precisely locate the optic in the main yoke, and another three within the spring-loaded clamping ring. The securing screws are not quite symmetrically placed to aid in removal of elements through the slightly larger opening.
This particular gimbal mount uses the high-sensitivity differential BD micrometers. These micrometers feature both a course and a fine adjustment. Readings do not correspond to angular rotation, but they are repeatable, and graduated to 1 micron (sensitivity of setting is approximately 0.1 micron).
Specifications on this particular gimbal mount include:
Optic diameter - 50mm
Optic thickness - between 1 and 12.5mm
Outside diameter - 124mm
Clear aperture of mount - 46mm
Approximate thickness of mount - 30mm (less micrometers)
Angular adjustment range - plus /minus 2 degrees
The mount is in superb condition - micrometers fully functional throughout range. There is only the slightest bit of surface corrosion present and very little evidence of use. This mount does not include the adapter plate. Those are listed independently as SKU number DP251 (they are only available with the purchase of a matching type gimbal).
Photo set 1641