5146 Surface Mount Adapter
Flangeless Instrument Mount
The 5146 adapter provides a standard 3½”-8 external thread for mounting various bases or other adapters, including standard surveying or optical alignment instruments. It has three mounting holes for fastening the ring to virtually any flat surface.
Bolt hole pattern:
Three equally spaced holes on a 2.970″ diameter bolt circle. Holes are 0.199″ (5.1mm) diameter, and are counterbored 0.344″ (8.7mm) diameter to a depth of 0.187″ (4.7mm).
External thread: 3½”-8
Approx. weight: ¼ lb.
May Be Used With
Fits onto any customer-supplied surface with a matching bolt-hole pattern
Accepts any product having an internal 3½”-8 thread