A catalogue of optica, mathematical, and philosophical instruments, made and sold by W. and S. Jones / [William Jones].
- William Jones
- Date:
- [1830]
Licence: Public Domain Mark
Credit: A catalogue of optica, mathematical, and philosophical instruments, made and sold by W. and S. Jones / [William Jones]. Source: Wellcome Collection.
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![BAROMETERS, &c. Barometers, plain mounted, from 1 /. 18j. to.. 3 O 0 Barometers, thermometers, and hygrometers, all in one neat mahogany frame, from 4l. J4s. 6d. to.. 6 [6 6 A new stick barometer, for ascertaining the heights of mountains, depths of valleys, &c. 4l. 4s. to. 5 5 O Ditto, with folding portable staves, gimbals, &c^.^. 7 17 6 Marine Barometers on springs, for floor or partition. 7 7 Q Hook’s wheel Barometer, less correct than the above common form, from 3/. 3*. to... 6 6 O Thermometers for all the various purposes, from 6d. to 3 3 o Six’s new thermometer, for shewing the extremes of heat and cold in the absence of the observer, from 1 /. I Ir, Qd. to .. 3 13 6 Chemical jointed scale Thermometers 3, to 600 degrees, from 15r. to .. 1 1 O Leslie’s differential thermometer, from 15s. to. 1 11 6 Ditto Photometers. 3 3 O Medical Thermometer, in a case... .. .. 0 15 O An hygrometer, shewing the moisture and dryness of the air O 10 6 De Luc’s whalebone hygrometer. 2 12 6 Daniel’s Hygrometer . ... 2 12 6 A rain gauge, with float and tin vessel. 1 4 O Wind gauges of the constructions of Dr. Lind, &c. 1 1 o Sike’s gov ernment hydrometers for discovering the strength and proportion of compounds in spirituous liquors,. 4 4 0 Glass bubbles for trying spirits. OJO 6 Hydrometers on the best principle, for brewing 1 /. 11 s. 6cl to 5 5 0 An hydrometer for the specific gravities of solids and fluids, 3 13 6 An apparatus for hydrostatical experiments, 3/. 13r. 6d. to . 21 0 O A Glass model of a diving bell.. 1 4 o Hydrostatic balances, from 2/. 12*. 6d. to... g g o A new and very accurate do. the conical beam of brass 12l. 12s. to. 52 10 0 Artificial magnets, in bars and sets of bars, from 2s. 6d. to... 6 6 O Ditto in shape of a horse-shoe, the strongest form, Ir. 6d. to ] 1 o Ditto, combined to any number, from 12r. to. 21 Q 0 Box of magnetical apparatus, illustrating a variety of curious and entertaining properties in magnetism, containing the following articles ; a set of six bar magnets ; two horse¬ shoe magnets; six iron balls ; a magnetometer; two spin¬ ners; a dipping needle; a gimbal compass; two brass ta¬ bles ; an armed combined magnet; six needles, and stands; and sundry other articles packed in a case, 5l. 5s. to .... 7 7 q Dipping magnetic needles, ]/. 1j. to. 5 5 0 Variation Compasses 1/. Is. to. 10 10 O Magnetical Recreations. The sensitive fishes, that swim towards a piece of bread placed at the end of a stick, and when the other end is presented, retreat. O 6 6 Comus’ two boxes of numbers, one of which being secretly arranged, is discovered by placing the other over it.... 2 2 0](https://iiif.wellcomecollection.org/image/b30381897_0012.jp2/full/800%2C/0/default.jpg)
