KNo\vLi:i)r,i:. 



AlT.i'ST, 1912. 



Trade Card of Fisher Combes. Maker of Mathematical and Nautical 

 Instruments, at the siyn of the Mariner and Globe, in Hroad Street. 

 near the .\nnel and Crown Tavern, behind the Koyal Exchange, 1 745. 



marvellous precision, made in 1777 by the firm of 

 De Grave, Short & Co., whose business as scientific 

 scale-makers was founded in 1670 at the corner of 

 St. Anne's Lane, now Gresham Street. The house of 

 De Grave, Short, had been in existence more than 

 sixty years, when the originators of the house of 

 Garrard set up the sign of the Golden Lion, in the 

 Havmarket. The balance of 1777 was one of the 

 heirlooms which were removed with scrupulous care 

 to the new home of the great firm in Albemarle 

 Street. It is greatly to be regretted that the archives 



1)1 the scale-makers, who have existed during por- 

 tions of four centuries, have been lost. It seems 

 iikclv that the founder of their business was, like 

 (ohii D()llf)nd, a Huguenot. 



K'irli.iiil Ci-.-iriri!'. uhdsc fine card of the perir)d 



I I'.rKK J44. 



Trade Card of William Watson, a Maker of Compasses and other 



Nautical Instruments, in Church Lane Stairs. Hull. 1755. 



GEORGE ADAMS, 



Mathematical Inftrument-Maker to his Majejly's Office of Ordnance, 



^t Tycho Brahe'j Head, the Corner cf Racquet-Court, in Fleet-Street, LONDON, 



MAKES and SELLS all Sorts of the moft Curious Mathematical, Philosophical, and Optical Instruments, in SBvcr, Brafi, 



Ivory, or Wood, with the utmoft Accuracy and Exaftnefs, according to the latcft and beft Difcovcrics of the modem Mathemaucians, 



HISNcwSiaQiadha^t, by Refaaion. for liking the 

 Sull'> Altjlude. cilhcr in > tackward or fonvaij Oblcrva- 

 Don. Alfotbc Sua'i Mignrtieal Azimoth, and thereby chc 

 Viiiaiioa of the NecUlc, miy be obtained by the fame (^adrant, 

 by ncafts of a panicular Compafs. which may be applied to it. 

 Mj.jAca's NewRii««cTi»oTn.iJcoi'i for viewing diftant 



He htcwifc Make? and Sells HtJUii Quad««t<ti in the moft 

 aa& Method, «nth Glaffei whofe Piano are truly parallel ; d- 

 mti Qsadrants, ^r. 



Urge AiTto.o-icAL Qy 



r.Mi 



Trakiit and EquAL 

 for obfening the Trinfiu of the Sun 

 tiJian, ifi-. Telcfcopes 6ncd with a Micro- 



Siu Diali HsiiiosTAi. for PcdeOaj! ii 

 Variety of Poztabli one». either LNivr 

 diffiffcBt Laticudei, with new In>pnn-eroeuC3. 



Choict; of curious Cafe, of D 



in SUv. 



a Sector, Scales, Proponionable and other 

 CompaiTes ; Drawing Per.). aProtraetor, Parallel Rules, f r. 



Al«> h.> Newinvcalcd Portable Mk-oscop. for v.ewing Jl 

 Kind of M.nu;e ObjecU. „ well Opakca. Tiai.l[sarent, in fo con- 

 rpicnootand eondfe a Manner, as to comprehend all ihcLles ol 

 dl the other sort, of Miaofcopcs in one Apparatus ; and ■""e"'*" 

 10 fo peat a Degree, a, to dilM.er the Circulanon of the Blood 

 ■a Aiumali, the Pctidalticl; Motion in Infeai. the Fartni of \ e- 

 (cables. and many olhci lorpriajnj Phinomcna, othensUe not 



n2J'a"'«her Sort: of M.coscor... either Double or Single. 



Riii-tcTiNoTiLfcorii, atitaCr.pi-i" « >>t^'""'< """" 

 IKh the greajeft Care. 



R.f.AcTiiioTitiscortiforScaorLMd. 



o'ri.if -i! ?.-■'■■ »i.ioi<!, or both, ptaily imfrovcd by 

 ^1' ; which all lie Celellial Phinomraa 



"V-,. ,iWiaT, FotTinCATios, iit. 



The So 



lEuc: 



Globki. mounted 

 ofiheSuD, Earth, Moon. t:?. 



Gioati and S ■ ^ ^^^ _ 



ihc Hwveni « owa clcg^aily reprcfented- 



CXT», wkb all Oieir prr>per Scc- 

 ttou cue in Wood ; ddign«d for tbc Eifc of ill PcHbni »!» would 

 inform ihemlcUn dcmoiiilnuvcly in tW PnAicc of fiatPiciivi. 

 MtMUiATios, SfHincLj, ts*!:. [Q be had obIv It the «boTc{ud 

 ?\ux. 



Ai« Puuri. or Engir.es for exhaiftiag the Air from pof^ 

 >'circli. uith all tbcir AppuRcunces ; whereby the Propcrtici of 

 tbat moft ufcful Fluid are <rifcovercdaAddemoafir%tedb^aadcnal':c 

 EzfcriaiCDtt ; F-ngina for the Comnrefion of the Air i Hvmo- 

 ttiktiKW. Balavcd, nicc1\ aiiJuAca for dcccminin| the fpcdidt 

 Gravity of Fluid, arbd Solidi. (Tf. 



Curious BtRouETdti, Dus«^< U'hrcl. Standard or PorabW 

 i^itr. or withou^Thennomcttn. Alfo the fo nvch famed Quick- 

 ;n vtK THttuoucTiif, made artn-an* of the Form* 



iHiouottTti of the laiell Coatlnitlion ; Watii Livili, 

 ^^hil:h may be adjudtd it one Station, Miaivxinc Whiili, 

 iWkirt and Coach WAY.Wum, for mcafuring jhe Way. fa*.. 



MliiDlw and Azimuth i'aCoxpJTr^ of all Som, euher for 

 !',c Cabin, Stccngc. ft Poclc« ; arafioal NUgocu, fonicwlarlx 

 L :i'ul for touching Marincn Conu-aiTci 



SncTACLij groond on Bra^ Tooli, in ibc Maotwr appfoKJ of 

 1. :heRov.xLSocilTY.fetinVarimof con^cnicBtFramo: Alfo 

 Ki AorNC Claiiii of all Sort*, (r. m iilrtr or otb^ Mcral. to tuna 

 into Cafes of varwtu Kind*. 



Pmsmi for demonftraiing the Theorr of Light awl Colocn 

 T'-rC^vitaAOBJCURA; for Dn*uig in Pcffrcilpe. m »luch 

 ■■ - .' nbjcili arc rc[«fcnied ifl ihcir projo Coloan. and. 



^osvif.arvdCYLiNDai 



TiriiiKnGlaflb, Srtc 



[ ^ _, _. . Macick Lantcrm. tff. 



1 / . .i^.\H »)ri» for viewing peifreAite Print! 



KKt and Ukamiuh of ibe Reverend 

 .1. .k- i>.*i unA Anpjirent MoUon of 



any Model or Inftnimcnt ciaJc 

 J aad Accancj- 



FlCUkE 345. 



The Trade Card of George Adams. Matliematical IiisinimciU Maker to His Majesty's Office of Ordnance, at the sign of Tycho Hraht:-'s 

 Head, at tlic Corner of Kactiuet Court in Fleet Street. 1775. 



