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Best London-made Drawing Instruments (continued).

Number.

210 Best steel road pen, ivory handle

61 Best sector-joint divider, 5 inch, brass, 2s. 9d. Electrum, 3s. 6d. 60 Ditto, hair divider

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brass, 5s.

Electrum, 6s.

ditto

70 Best Electrum double jointed bow pencil, fine needle point

bow pen

71 Ditto,
ditto,
76 Best brass sector-joint 4-point set, viz., 6 inch compass, pen point,
pencil point, and lengthening bar

77 Best Electrum ditto,

ditto,

ditto

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Cases of Best London-made Sector-Joint Instruments.

78 Best 6 inch Electrum Compass, divider, pen point, pencil point, lengthening bar, ivory handle pen, bow pen, ivory protractor, and ivory parallel, in mahogany lock case

ditto,

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79 Ditto,
with bow pencil extra, and hair divider,
in best rose-wood case, silk-velvet lined
80 Best 6 inch double jointed Electrum Compass, with loose needle
points, hair divider, pen point, pencil point, lengthening bar,
double jointed needle point bow pen, and bow pencil, ivory handle
pen, ivory parallel, and full divided ivory protractor, in rose-wood
case, silk-velvet lined

81 Ditto,

ditto,

with extra bar, needle holder, set of 3 fine steel spring bows, wheel pen with dotters, and best ivory sector

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5 0 0

82 Perambulators, or Mapmeters, in leather case, each, small, 2s. 6d., large, 3s.

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0225 Improved large wood Divider, for black board chalk drawing, with

brass tightening screw.

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301 12 inch box-wood scale, with divisions on both edges and line of

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305 Superior box-wood Gunter's Scale, 12 inch, 13s. 6d. 24 inch 306 12 inch best box-wood Chain Scale 10 to 60

307 12 inch

308 12 inch

ditto,
ditto,

Architect's
Plotting Scale

Scales, Protractors, Curves, &c., (continued).

Number.

309 12 inch improved Universal Scale

310 6 inch box-wood Protractor (narrow)

311 6 inch

ditto, (broad)

312 Box-wood Protractor, with moveable brass arm, for taking angles 313 6 inch box-wood Sector

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314 Horn Protractors, various sizes, at 2s., 3s., 4s., 5s., 6s., per dozen. 315 Brass Protractor, 3 inch

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317 Brass Circular Protractor, 3 inch

318 Superior brass 6 inch Circular Protractor

319 Best ditto, engraved and divided to 20 minutes

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per dozen

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319A Best 6 inch Protractor, with folding arms, divided on silver to 1 minute

320 Box-wood Marquois Scales

321 Pear-wood or mahogany Set Squares, various angles and sizes, per dozen, 1s. 9d., 2s. 6d., and 3s. 6d.

322 Pear-wood Curves, assorted, various sizes and kinds, per doz. 5s. 6d. and 0 7 6

16s. 22s. 27s. per doz.

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36 inches.

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SURVEYING, MINING, AND NAUTICAL INSTRUMENTS.

Number.

Land Chains, warranted correct.

343 Surveyor's Chains, superior make, with strong brass handles and

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344 Ditto, with two-sawed oval rings, brass handles, and marks.

345 Ditto, with round rings, brass handles, and marks.

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346 Ditto, with iron handles.

346A 14 feet sliding mahogany Levelling Staves, painted figures

Brass Cross Staffs, with Sights, in Cases.

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349 Superior ditto, with Compass, finely divided dial, adjustment, &c., No. 5, 2 5 0

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354 Improved rose-wood Level, with sights and cross sights.

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358 Brass Road Level, with sights, and graduated arc for taking

359 Best Level Tubes, proved, assorted sizes to 5 inches

361 Level Tubes, (not proved,) assorted sizes

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assorted 5 to 8 inches

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366 5 inch Theodolite, with clamps and tangent screws

367 Best ditto, divided on silver

368 Ditto, ditto, with spring verniers, as Troughton and Sims's 369 6 inch Theodolite, plain

370 Best ditto, divided on silver to 20 seconds

371 Ditto, ditto, with rising compass box

372 Optical Squares, at 16s. and 24s. each.

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373 Artificial Horizons, from 45s. each. 374 3 inch Prismatic Compass, plain 375 Best ditto, with silver ring

376 Best Prismatic Azimuth Compass, with 6 inch card, silvered ring, divided to 20 minutes, in strong mahogany box (East India Company's pattern)

377 3 inch Mining Compass, floating dial with stop, in mahogany case, with brass folding sights.

378 5 inch Mining Compass, mahogany case, with silvered dial engraved, and edge-bar needle, agate cap

379 Superior 4 inch ditto, with folding sights, and two levels

380 4 feet mahogany jointed stand for ditto, with ball and socket joint 381 Best 2 inch Brass Compass, silvered dial, agate cap needle, with folding sights, in leather case

382 Ebony Quadrant, in oak case

Quadrants.

383 Single Tangent, stump and block

384 Double Tangent

385 Ditto, Vertical

386 Single Tangent, fixed adjustment, and six shades

387 Handle Quadrant, fixed adjustment

388 Vertical ditto

Metal Quadrants.

250

310 0

650

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100 210 0

115 0

1 10 0

1 13 0

117 0

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391 Ditto, with swing magnifier and telescopes, divided to half-minutes 392 Superior ditto, seven shades, and ivory arch

393 Ditto, ditto, and silver arch

Sextants.

394 Flat limbs, ivory arch divided to half-minutes, with telescopes
395 Ditto, silver arch divided to 15 seconds, rising piece, with telescopes
396 Ditto,
397 Best diamond, triangular or oval limbs, divided to 15 seconds

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406 Upright" Model Barometer," in mahogany or rose-wood, with ivory scale, and thermometer

407 Mahogany wheel Barometer, superior make, 8 inch dial

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416 Glass Sacchrometers, with ivory scale, in tin case, per dozen 40s. 417 Hydrometers,

per dozen 40s.

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418 Box-wood Thermometers,

13s. 6d.
6

ditto,

Thermometers.

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419 Best ditto, ditto, polished, with bevil-edge, 8 inch, 21s. per dozen.

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423 Ivory carved Thermometers, under glass shade, 6s. 6d. to 50s. each.

424 Box registering Thermometers, (night and day,) 10 inch, with magnet, 9s.6d. each.

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