#theodolite

[infographicjournal]

What Is a Theodolite?

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[synchronicobject]

DIGGES, LEONARD. C.1515-1559.

A geometrical practical treatize named Pantometria, divided into three bookes....

London: Abell Jeffes, 1591.Small folio (268 x 178 mm). Engraved vignette on title page, 2 large woodcut coats-of-arms, numerous woodcut initials, illustrations, head- and tail-pieces in text, errata leaf at end. Modern quarter calf antique and marbled boards, edges gilt, large bookplate and blue morocco blind-stamped coats-of-arms cut from earlier binding and laid down to front endpapers. Marginal paper repairs to some edges and corners, lacking initial blank, dampstaining from leaf D1 to end, old ink ownership inscriptions to title, ink marginalia, minor soiling and staining.

Provenance: : Sir William Stirling-Maxwell [1818-1878] (bookplate).

Second edition, but considered superior to the first, as it was greatly expanded by the author's son, Thomas Digges (c.1546-1595). This work on practical applied geometry contains the first description of the theodolite, one of Leonard Digges's inventions, and  the earliest description of what we would come to call the telescope. In this addition, Leonard Digges has added sections on navigation, ballistics, and pyrotechnics. Cockle 16; ESTC S107357; Tomash & Williams D54.

(via Bonhams)

[faradaysketches]

Tripods for Theodolite and Tree, Karlsruhe. March 2021

[leftovies]

construction ennui

[fishstickmonkey]

Altazimuth theolodite

William Barker, Wigan, c.1760.

Science Museum Group Collection

[spectrometrie]

[lark-of-the-sanguine]

[karmicbias]

Omg I was a spelling bee kid too!! What a nightmare that was lmao

Hahaha no way!

It was such a cool but incredibly weird experience.

My mom had no idea how to help me study so she basically mandated that I spent an hour a week copying words out of the dictionary for practice.

Needless to say I didn't learn anything that would actually help me beyond my natural baseline of skill. 🤦

I got dinged on the first round - that long ago we all got to spell onstage and they didn't have written tests or anything. I misheard the guy and totally whiffed. Didn't even get the initial sound correct.

But hey! I got to stay at a fancy hotel and go to lots of fun activities they had for us, and I got to meet Al Roker. 🤣