02:21

Philipp Matthäus Hahn calculator, 1770 1774, Division

30:46

Johann Christoph Schuster, 1820

20:50

Mechanical calculator, Johann Jakob Sauter. Video curtesy of Gotesborg Stadsmuseum. IMPROVED AUDIO

03:43

Arithmometere. Charles Xavier Thomas, Colmar in Alsace, France, 1872.

10:52

How the Arithmometer Works, Charles Xavier Thomas, Colmar in Alsace, France, 1872

14:00

Gottfried Wilhelm Leibniz, 1672, demonstration video

00:46

Arithmometer calculator, Charles Xavier Thomas, Colmar in Alsace, France, 1872

04:34

Philipp Matthäus Hahn calculator 1770 1774, demonstration model

09:00

Astro-skeleton project. The summation conference call.

05:18

Robert Roskell, Liverpool, England, c.1840 skeleton clock

03:27

Watson orrery armature demo

02:16

Watson clockwork module finished

04:02

Watson 2nd wheel end shake repair

10:35

Watson technical overview 1

20:59

Watson demonstration overview

01:42

Theodor Kromer, A. G., Freiburg, Germany

02:23

Triple axis escapement model

01:23

Big Ben replica video

12:06

Oliver Pillard model #3, New Britain Bank Lock Co., 1875. Demonstration video.

02:05

New Britain Lock Co., Pillard model #3 movement, 1875

01:08

Dent epicyclical skeleton

28:22

Hall Premier double dial #3, c.1870 with Hall/Consolidated time lock, c.1882

05:12

Chicago Time lock/Diebold Marsh v 2, demonstration of bolt dog arming option.

01:15

Hollar Model 2, 1896. Initial powering up of the motor and solenoid systems

00:22

Hollar Model 2, 1896. Timer movement finished

16:10

Hollar Lock Inspection and Guarantee Co., Model 2, 1896, time lock demonstration video.

16:49

Consolidated Concussion and Calendar Time Lock

01:04

Yale Model 1

06:55

Demonstration of Yale Model #1 w. auto off-guard let off, c. 1876

12:42

Overmyer & Huston Model 1 time lock, 1876

03:08

Charles Fasoldt's entry in the 1876 Philadelphia Centennial Exposition winning a gold medal.

03:03

Tourbillon escapement model

02:56

Charles Fasoldt, 1876 Centennial Exhibition in Philadelphia

12:03

Astro-skeleton overview montage, Oct, 2022

01:43

Astro-skeleton, Planisphere bearings demo

00:09

Ratchet demo of main winding crank

05:04

Holmes model 2[2] internal override system, c. 1882

01:26:39

BHI, February 2022 Zoom presentation, 2

18:22

Astro-skeleton, Presentation video

00:33

Astro-skeleton, Sidereal roller cage demonstration

15:48

Astro-skeleton, Views and demonstrations of components, 10 2021

10:25

Astro-skeleton, The finished overview video

01:08

Astro-skeleton, Reverse coup perdu correction index wheel

01:35

Astro skeleton, Wagner remontoire spring failure

08:31

Brass exhibition clock, c 1880

01:11

Louis Thouverez, c. 1790, Paris France, Pendulum study.

04:54

Astro-skeleton, Close up views of machine running

00:51

Astro-skeleton, Locating jig for keyway holes

01:30

Astro-skeleton, June 2021

02:01

Astro-skeleton, Seconds correction and 'reverse coup perdu' device

00:37

Astro-skeleton, Seconds buffer spring demonstration

00:39

Astro-skeleton, Seconds hand correction

01:18

Astro-skeleton, Seconds hand acting erratically

06:00

Atlas orrery clock

01:48

Atlas clock, the celestial sphere

00:22

Astro-skeleton, Celestial demonstration selector

00:30

Astro-skeleton, mean solar and equation of time setting demo

01:36

Astro-skeleton, fitting of the carrying frame to the clock demo.

01:21

Astro-skeleton, cutting a dial hand

00:46

Astro-skeleton clock on mockup sub base, Jan 2021