Is anyone using this with Nikon Binoculars? Specifically the 7245 Action Extremes?

Yes, I am using it with exactly with that model. It works pretty well, so far I did not have any issue (I use it with a dolica tripod)

Is there a threaded hole on the bottom of this adapter to allow it to be mounted to the tripods quick release plate?

Yes, but be aware that the thread is very deep, plus there's padding that increases the distance. Does not work with my Dolica G100 QR stock plates, because the screw isn't long enough. Other adapters work fine.

Is adapter made of metal? What is the diameter of the knob and diameter of cylindrical section in front of the knob which the screw passes through?

Sturdy metal. No idea what the diameter of the cynlindrical section in front of the knob is but it fits my binoculars snugly with no jiggles or concerns.

will this fit on my bushnell 10x42 hd binoculars the gap is pretty small

I mounted it to My Bushnell Legend Ultra 10X42. The mounting screw knob does fit inside of the housing, however is a little long, so the binocular pivots along the longitudinal. It's the first time I've ever mounted binoculars like this so I do not know if that is common. I don't like it myself so I'll be returning it.

ASIN	B000BYH8EQ
Best Sellers Rank	#159 in Binoculars
Brand Name	Barska
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (1,892)
Date First Available	May 1, 2007
Included Components	Binocular Tripod Adaptor
Item Dimensions LxWxH	1.9 x 1.5 x 4 inches
Item Package Dimensions L x W x H	4.17 x 2.24 x 1.61 inches
Item Weight	3.2 ounces
Manufacturer	Barska
Material	Solid Construction
Model Name	AF10546
Model Year	2015
Number of Items	1
Package Weight	0.1 Kilograms
Part Number	AF10546
Size	1-(Pack)
Sport Type	Hunting
Suggested Users	Tripod
Warranty Description	See Manufacturer

Barska Binocular Tripod Adapter – Universal Mount for Standard Camera Tripods, Fits Most Binoculars

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Description

Specifications

Common Questions