SKU: 26075427892

Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, Ireland

$16.16 $17.95
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

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Description

Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, IrelandPlate 24 figure 3 from the paper 'On the construction of specula of six feet aperture; and a selection from the observations of nebulae made with them', by William Parsons, 3rd Earl of Rosse, Philosophical Transactions of the Royal Society, volume 151 (1861) pp. 681 746. A rear view of the cast iron grinding tool used to produce the speculum (mirror) of the reflecting telescope at Birr Castle, Parsonstown, Ireland. The circular tool is shown suspended

Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, Ireland
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SKU: 26075427892

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4.1 ★★★★★
Based on 544 reviews
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M
Verified Purchase
Mark Liszkiewicz
Waukegan, US
★★★★★ 5
nice quality
Size: 1.9" x 9.9" x 11.4"
I happen to be a fan of K&N air filters. Fit perfect in my vehicle. Seems like a much nicer quality filter than the cheapo filters from the parts store.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
G
Verified Purchase
gwpconcreteman
Battle Creek, US
★★★★★ 5
excellent product
Size: 1.9" x 9.9" x 11.4"
easy to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
L
Verified Purchase
Leyla Raymondo
Massapequa, US
★★★★★ 5
Great purchase!
Size: 1.9" x 9.9" x 11.4"
This has worked out quite well. I have had it since 2023 and have been cleaned thru about 6 maintenance schedules. It's been 2 yrs and it's in great shape. Worth every penny.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 21, 2025
O
Verified Purchase
OldMan
Waukegan, US
★★★★★ 4
Really filters the cabin air
Size: 1.9" x 9.9" x 11.4"
K&N filters are always a cut above. Can’t say the same for service/support after the sale.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
R
Verified Purchase
Richard B
Houston, US
★★★★★ 5
quick and easy fit
Size: 1.9" x 9.9" x 11.4"
Instructions made it a very quick and easy fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026

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