® ii) 
uJ.Parallelogrammum 
Scheinen', cum necefla- 
riis cochleis , ad firman- 
dum in menfa inftru- 
mentum , quo figurae 
quaevis propofitae vel ma- 
jores vel minores vel ae- 
quales juxta libitam pro- 
portionem delineantur. 
17. Cylindrus conca- 
vus horarius cupreus, al- 
titudine 7. forte & dia- 
metro duorum digito- 
rum, partim deauratus, 
partim argento obdur 
&us. 
ig. Schola Stegano- 
graphica Schotti , figura 
circulari admodum par- 
va, latitudine duos digi- 
tos non excedens. 
19. Catena geometri- 
ca robufta duarum de- 
cempedarum Rom. lon- 
gitudine, ex] filo, ferreo 
ftanno obdu&o probe_> 
combinata. 
10. Similis ex auri- 
chalco juxta pedemRhc- 
nolandicum, duarum de- 
cempedarum. 
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