Instrumenta Eccesiastica 1847

This gallery contains 7 photos.

The Ecclesiological (late Cambridge Camden)  Society published working drawings of church fittings. Here is a selection of 7 of the plates, full size scans are available on application by email.

L1D-20c at 50m AGL

This gallery contains 3 photos.

At 50m AGL GSD is 1.17 cm/px f4, iso 100, 1/100th 120% screen grab: B

Getting to know the Mavic Pro 2

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In preparing the PfCO required operations manual I found not all the requested fields are in the OEM  manual, although the Mavic Pro 2 is a certified type some templates require a technical specification. For the minimum voltage level for … Continue reading →

L1D-20c image quality: 1st thoughts

This gallery contains 8 photos.

This is not definitive, so far I have only used this camera on the default ‘auto’ settings but I want to get a start on this, if nothing else to set a datum for what, hopefully follows. The L1D-20c is … Continue reading →

Reality Capture..really?

This gallery contains 4 photos.

I see a lot of these and, very occasionally I see them translated into drawings, the kind of drawings clients want for mark up. The business of reality capture is storming ahead, we now have tools for passive capture like … Continue reading →

TheoLt for Leica TS Captivate series

This gallery contains 13 photos.

If you select TPS1200 as the instrument in TheoLt and assuming Bluetooth/Windows version compatibility this is how I got a TS15 ‘Captivate’ instrument to work with TheoLt, the cable option may require the correct cable for windows version: GEV 267 … Continue reading →

Achieving closure: the first Bowditch adjusted traverse?

This gallery contains 16 photos.

Origin of the Bowditch method. Published in 1802 Nathaniel Bowditch’s exposition on navigation is famous among surveyors for its description of the traverse adjustment method which bears his name. The method first appears for the computation of Traverse Sailing.  Bowditch … Continue reading →

RP Elevations by TheoLt & QGIS

This gallery contains 14 photos.

Originally posted on Billboyheritagesurvey's Blog:
Required tools • AutoCAD /BricsCAD • TheoLt • Image processing tools: Light room/Photoshop/MS Paintshop • QGIS https://www.qgis.org/en/site/forusers/download.html# QGIS is a freeware, open source, GIS compiler for map based database work. It includes a useful…

As built 1856

This gallery contains 11 photos.

Preliminary results of metric survey for conservation. TST traverse and wireframe plus rectified photography, measured drawing and roof details by KAP: B

2 & half D

This gallery contains 7 photos.

Working up drawings from wire frames and point clouds needs a way to get 3D info into 2D space. Selective modelling provides a method for edge extraction of complex or repetitive details. The projection of curved or oblique alignments onto … Continue reading →