Binoculars & Telescopes
Telescope Telescope Astronomical Monocular 1.25" Eyepiece 4mm 6.5mm 10mm 12.5mm 15mm 20mm 25mm 30mm 40mm Multi Green Coated(30mm)
It has a pupil distance and a field of view of 40-60 degrees, lower cost, and is suitable for magnifications. Composed of exactly the same two sets of double cemented achromatic lenses, it successfully controlled chromatic aberration and spherical...
https://www.bizrate.co.uk/binoculars_telescopes/telescope-telescope-astronomical-monocular-1-25-oid40261932517.html