Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 316
lly utilized, and thelight gathering qualities of the telescope are unsurpassed. If fitted withthe variable power eyepiece at an additional expense of $12.00, the mag-nification can be regulated between 15 and 25 diameters to suit all lightconditions. Phosphor bronze of the hardest alloy is used… … Equatorial Solar Attachment $45.00 Eyepiece prism, attachable also to main telescope 6.50 When the solar attachment is supplied for the rapid and accurate deter-mination of the meridian we recommend the counterpoise plummet withloop adapter to preserve a perfect instrumental equipoise at an…
Engineering instruments · Drawing instruments
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