An 18th-century brass reflecting telescope with a 4.5 inch mirror (112 mm). 26-inch (66cm) long tube covered with ray skin. The screw rod moves the mirror to focus. Small star-finder scope attached. Mounted on a simple, alt-azimuth mount. The altitude and azimuth are adjusted by two turn keys which turn a screw drive. Pillar and stand with cabriole legs and inswept feet, in original plush lined mahogany case. Unsigned.
An 18th-century brass reflecting telescope with a 4.5 inch mirror (112 mm). 26-inch (66cm) long tube covered with ray skin. The screw rod moves the mirror to focus. Small star-finder scope attached. Mounted on a simple, alt-azimuth mount. The altitude and azimuth are adjusted by two turn keys which turn a screw drive. Pillar and stand with cabriole legs and inswept feet, in original plush lined mahogany case. Unsigned.
An 18th-century brass 4-inch reflecting telescope,
signed on the back plate JAMES SHORT LONDON. The screw rod adjustment underneath the tube is for
the secondary mirror. The primary mirror is unsigned. The 24-inch long tube with dustcap and finderscope is mounted on an alt-azimuth
mounting with a hand-turned worm gear drive.
An 18th-century lacquered brass 4-inch reflecting telescope,
signed on the eyepiece extension tube G. Adams No 60 Fleet Street LONDON Instrut. Maker to his MAJESTY. The removable dust cover
allows either a 4-inch or 3-inch aperture. One extra eyepiece. The 25-inch long body is mounted on a simple compass joint, tapering column, and folding tripod stand.
A compact 2 and 1/2 inch refracting telescope by Ramsden about 1760. The brass body tube is signed Ramsden London. Two adjustment knobs on the tapered brass mount--one for angling the tube up and down and the other for adjusting the direction of the tube right or left. Internal screw focusing for the eyepiece.
A 2 and 3/4 inch presentation brass refracting telescope by Jesse Ramsden, English, late 18th century. An angled brass adjustment rod on the tripod allows movement up and down with a positive lock. Two additional eyepieces and lens cap.