ANTIQUE
GLOBES, SURVEYING and DRAWING INSTRUMENTS for sale
A rare antique mining dial,
early 19th century, engraved in script on the silver compass dial
Spencer & Co., London. Spencer
& Co are listed as working at 66 Wapping, London in 1817. The sights fold over the original brass lid,
and the dial has a stand attachment socket underneath.
The, larger than usual 6 ½ in. dia., silver compass has four 0
– 90 degree scales and cardinal points, and the outside ring is scaled 0 –
360 degrees. The instrument has a needle clamp and locating
pin for the brass cover which is engraved with
scales and marked “links of chain”. The instrument is in good working
condition with some original lacquer left on the body and sights. -
£350
ANTIQUE
(BOX, POCKET, SURVEY) SEXTANT. This English box sextant variously called a drum,
surveyors or pocket sextant, made by ROSS, London. It is complete with
it's original lacquer and is a genuine antique instrument, NOT a modern
reproduction. There is nothing missing. It
has 2 swing-out filters which are covered by a dust
shield when closed, the inlaid silver scales are clear and the scale magnifier
works well. The instrument has a sliding shutter to select between a small
pinhole, a large pinhole and a detachable telescope,
which even has a separate sun filter and fits in the instrument case.
The fine adjust screws work smoothly and even the original key for adjusting the
calibration is still in it's rightful place in the instrument. The screw off lid
has a table of tangents on the inside and a wonderful presentation
inscription on the base “BEAUFORT
TESTIMONIAL 1899
AWARDED TO SUB-LIEUTENANT J.C.W.HENLEY
R.N. (This was a prize of instruments or books of a professional
character and of practical use to a Naval officer, bestowed annually on the
Midshipman who passes the best examination in navigation and pilotage for the
rank of Lieutenant. The annual prize was founded in 1860 to commemorate the
service of Rear Admiral Sir Francis Beaufort KCB, who was Hydrographer of the
Navy from 1829 to 1855.)
This instrument is in excellent working order, the
optics and the mirrors are all original as best as I can tell. All this is
probably due to it having been kept in its original leather case,
which is also fine. - £395
A
pair of antique PROPORTIONAL DIVIDERS by
HARPER & TUNSTALL Ltd, LONDON, in brass &
steel, 6 ¼ inches long in a fine fitted mahogany case.
The instruments are engraved with scales on one side for plans
and for lines & linear ratios on the other .- £95
A
vintage (BOX, POCKET, SURVEY) SEXTANT. This
English box sextant variously called a drum, surveyors
or pocket sextant, and is a genuine antique instrument, NOT a modern
reproduction. There is nothing missing. It
has 2 swing-out filters and a sliding internal sun filter for the pinhole sight.
The inlaid silver scales are clear and the scale magnifier, which locates into a
centre pin for storage, works well. This instrument is in working order, as best
as I can tell. The cover has a handle to the top and on the inside
is a Table of Tangents. The cover fits onto the underside of the instrument to
act as a handle. The cover is engraved with the
original owners mark, “R.P.”
and the serial number “014”
and the makers name “E.R.WATTS & SON,
LONDON”. The paintwork on the instrument is showing its age but
the lacquer and silver scales are in good condition. -
£195
An
antique surveying level, in it’s original case.
The instrument has a graduated bubble level along the
telescope and cross bubble level at the front. It has rack & pinion
focussing, extending ray shade and dust cover, and a magnifying glass to read
the scale on the compass. A dry card compass mounted
beneath the telescope has a thumbscrew needle clamp and is finely engraved in
degrees on a silver scale. The instrument comes on a 3 screw mount for staff or
tripod mounting with rotation clamp. It comes in the original mahogany case
which measures about 20 inches long overall, contains a “No.8a
LEVEL BOOK” and has brass hinges and catches and is complete, and in
good working order. - £165
An
antique surveying level, with accessories in it’s original case,
the makers name engraved on the body Troughton
& Simms, London. The
instrument has a graduated bubble level along the
telescope and cross bubble level at the front. It has rack & pinion
focussing, extending ray shade and dust cover, focussing eyepiece which brings
the cross hairs into focus and a magnifying glass to read the scale on the
compass. A dry card compass mounted beneath the telescope is finely engraved in
degrees on a silver scale. The instrument comes with a detachable 4 screw mount
for staff or tripod mounting. It comes in the original mahogany case
which measures about 20 inches long overall, with brass hinges and catches and
is complete, with all original finishes and in excellent working order. A fine
example of a Victorian surveying level by one of the top makers of the day. - on
hold
A
1 3/4 in. dia. Lacquered brass Optical Square,
engraved "HR" on the case - £45
BOOKS
The World's Minerals
(with 40 colored plates) by L.J.Spencer
- £15
last updated 22/06/2010