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$100.00 $23.68
$75.00
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Dec
Feb
Apr
Jun
Aug
Oct
Dec
Feb
Apr
2015
2016
$78.77, Oct 19 - Oct 24 $78.77, Oct 19 - Oct 24 $60.94, Oct 19 - Oct 21 $78.77, Oct 19 - Oct 24 $78.77, Oct 19 - Oct 24 $60.93, Oct 24 2:01 am $80.11, Oct 30 - Nov 11 $79.20, Oct 30 - Dec 15 $60.91, Oct 30 - Nov 4 $80.11, Oct 30 - Nov 11 $79.20, Oct 30 - Dec 15 $60.55, Nov 11 1:49 am $80.25, Nov 16 - Nov 19 $79.20, Oct 30 - Dec 15 $60.34, Nov 16 5:52 am $80.25, Nov 16 - Nov 19 $79.20, Oct 30 - Dec 15 $60.70, Nov 19 8:04 am $80.28, Nov 21 - Nov 25 $79.20, Oct 30 - Dec 15 $60.69, Nov 21 - Nov 29 $80.07, Nov 27 - Dec 5 $79.20, Oct 30 - Dec 15 $60.69, Nov 21 - Nov 29 $80.07, Nov 27 - Dec 5 $79.20, Oct 30 - Dec 15 $60.67, Dec 1 10:35 am $80.07, Nov 27 - Dec 5 $79.20, Oct 30 - Dec 15 $60.65, Dec 3 - Dec 5 $80.24, Dec 7 4:31 am $79.20, Oct 30 - Dec 15 $60.64, Dec 7 4:31 am $79.97, Dec 9 6:28 am $79.20, Oct 30 - Dec 15 $60.60, Dec 9 6:28 am $81.77, Dec 11 - Dec 22 $79.20, Oct 30 - Dec 15 $60.54, Dec 11 8:40 am $81.77, Dec 11 - Dec 22 $79.20, Oct 30 - Dec 15 $60.48, Dec 13 8:28 am $81.77, Dec 11 - Dec 22 $79.20, Oct 30 - Dec 15 $60.42, Dec 15 6:52 am $81.77, Dec 17 - Dec 22 $81.77, Dec 11 - Dec 22 $60.37, Dec 17 6:39 am $81.77, Dec 17 - Dec 22 $81.77, Dec 11 - Dec 22 $60.94, Dec 22 1:28 am $88.03, Jan 12 - Jan 13 $88.03, Jan 12 - Jan 13 $60.73, Jan 12 10:04 am $88.03, Jan 12 - Jan 13 $88.03, Jan 12 - Jan 13 $60.72, Jan 13 10:28 pm $82.60, Jan 15 - Jan 22 $82.60, Jan 15 - Jan 22 $60.71, Jan 15 - Jan 17 $82.60, Jan 15 - Jan 22 $82.60, Jan 15 - Jan 22 $60.68, Jan 18 10:33 pm $82.60, Jan 15 - Jan 22 $82.60, Jan 15 - Jan 22 $60.66, Jan 20 2:20 pm $82.60, Jan 15 - Jan 22 $82.60, Jan 15 - Jan 22 $60.65, Jan 22 5:06 am $82.39, Jan 23 - Feb 1 $82.39, Jan 23 - Feb 1 $60.66, Jan 23 7:01 pm $82.39, Jan 23 - Feb 1 $82.39, Jan 23 - Feb 1 $60.64, Jan 25 10:41 am $82.39, Jan 23 - Feb 1 $82.39, Jan 23 - Feb 1 $60.61, Jan 27 - Feb 1 $82.93, Feb 3 - Feb 6 $82.93, Feb 3 - Feb 15 $60.62, Feb 3 - Mar 12 $82.93, Feb 3 - Feb 15 $79.20, Feb 8 - Mar 14 $60.62, Feb 3 - Mar 12 $83.04, Feb 17 - Mar 1 $79.20, Feb 8 - Mar 14 $60.62, Feb 3 - Mar 12 $83.33, Mar 3 - Mar 14 $79.20, Feb 8 - Mar 14 $60.62, Feb 3 - Mar 12 $83.33, Mar 3 - Mar 14 $79.20, Feb 8 - Mar 14 $60.75, Mar 14 - Apr 13 $85.57, Mar 17 9:16 am $79.87, Mar 17 9:16 am $60.75, Mar 14 - Apr 13 $81.28, Mar 19 - Mar 24 $79.20, Mar 19 - Apr 16 $60.75, Mar 14 - Apr 13 $80.42, Mar 26 - Apr 10 $79.20, Mar 19 - Apr 16 $60.75, Mar 14 - Apr 13 $79.70, Apr 13 - Apr 24 $79.20, Mar 19 - Apr 16 $60.75, Mar 14 - Apr 13 $79.70, Apr 13 - Apr 24 $79.20, Mar 19 - Apr 16 $70.00, Apr 16 5:57 am $79.70, Apr 13 - Apr 24 $79.20, Mar 19 - Apr 16 $60.75, Apr 18 - Apr 24 $79.78, Apr 27 - May 3 $79.20, Mar 19 - Apr 16 $60.75, Apr 27 10:20 am $79.78, Apr 27 - May 3 $79.20, May 3 - Aug 16 $70.00, Apr 30 - May 21 $79.20, May 3 - Aug 16 $77.92, May 5 6:01 pm $70.00, Apr 30 - May 21 $79.20, May 3 - Aug 16 $77.97, May 10 - May 21 $70.00, Apr 30 - May 21 $81.43, May 25 - Jun 3 $79.20, May 3 - Aug 16 $69.75, May 25 5:33 am $81.43, May 25 - Jun 3 $79.20, May 3 - Aug 16 $69.74, May 29 4:45 pm $81.43, May 25 - Jun 3 $79.20, May 3 - Aug 16 $70.00, Jun 3 - Jun 7 $82.13, Jun 7 - Jun 15 $79.20, May 3 - Aug 16 $70.00, Jun 3 - Jun 7 $82.13, Jun 7 - Jun 15 $79.20, May 3 - Aug 16 $69.92, Jun 11 5:35 pm $82.13, Jun 7 - Jun 15 $79.20, May 3 - Aug 16 $69.77, Jun 15 12:30 pm $80.37, Jun 19 - Jun 26 $79.20, May 3 - Aug 16 $39.99, Jun 19 - Jun 23 $80.37, Jun 19 - Jun 26 $79.20, May 3 - Aug 16 $39.94, Jun 26 8:37 pm $80.35, Jun 30 - Jul 14 $79.20, May 3 - Aug 16 $39.62, Jun 30 10:02 pm $80.35, Jun 30 - Jul 14 $79.20, May 3 - Aug 16 $39.27, Jul 5 5:38 am $80.35, Jun 30 - Jul 14 $79.20, May 3 - Aug 16 $38.83, Jul 10 7:04 pm $80.35, Jun 30 - Jul 14 $79.20, May 3 - Aug 16 $38.53, Jul 14 3:37 pm $81.00, Jul 18 - Jul 21 $79.20, May 3 - Aug 16 $69.92, Jul 18 - Aug 27 $81.08, Jul 25 12:44 pm $79.20, May 3 - Aug 16 $69.92, Jul 18 - Aug 27 $81.26, Jul 29 - Aug 9 $79.20, May 3 - Aug 16 $69.92, Jul 18 - Aug 27 $80.68, Aug 12 - Aug 24 $79.20, May 3 - Aug 16 $69.92, Jul 18 - Aug 27 $90.17, Aug 27 - Sep 4 $90.00, Aug 27 - Sep 12 $69.92, Jul 18 - Aug 27 $90.17, Aug 27 - Sep 4 $90.00, Aug 27 - Sep 12 $69.91, Aug 31 - Oct 25 $90.37, Sep 8 - Sep 20 $90.00, Aug 27 - Sep 12 $69.91, Aug 31 - Oct 25 $90.37, Sep 8 - Sep 20 $84.57, Sep 16 - Sep 20 $69.91, Aug 31 - Oct 25 $84.57, Sep 16 - Sep 20 $81.13, Sep 23 - Sep 27 $69.91, Aug 31 - Oct 25 $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $69.91, Aug 31 - Oct 25 $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $69.89, Oct 29 5:25 pm $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $69.79, Nov 2 5:03 pm $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $69.59, Nov 6 8:11 pm $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $69.23, Nov 10 10:47 pm $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $68.87, Nov 15 1:37 am $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $68.48, Nov 19 10:34 am $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $68.09, Nov 23 8:26 pm $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $67.70, Nov 28 11:26 am $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $69.92, Dec 3 8:28 am $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $69.83, Dec 8 6:24 am $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $69.69, Dec 13 8:15 am $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $69.51, Dec 18 11:21 am $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $69.32, Dec 23 8:03 am $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $69.15, Dec 28 10:00 am $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $68.48, Jan 2 5:58 am $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $68.27, Jan 7 3:02 am $100.00, Oct 1 - Jan 27 $90.00, Oct 1 - Jan 12 $68.22, Jan 12 1:54 am $100.00, Oct 1 - Jan 27 $89.95, Jan 17 - Feb 1 $69.54, Jan 17 12:51 am $100.00, Oct 1 - Jan 27 $89.95, Jan 17 - Feb 1 $68.14, Jan 22 1:52 am $100.00, Oct 1 - Jan 27 $89.95, Jan 17 - Feb 1 $68.09, Jan 27 3:55 am $99.10, Feb 1 3:05 am $89.95, Jan 17 - Feb 1 $68.05, Feb 1 3:05 am $89.95, Jan 17 - Feb 1 $86.37, Feb 6 6:28 am $67.96, Feb 6 6:28 am $89.95, Jan 17 - Feb 1 $63.61, Feb 11 9:07 am $50.63, Feb 11 9:07 am $89.95, Jan 17 - Feb 1 $49.23, Feb 16 5:58 pm $34.96, Feb 16 5:58 pm $89.95, Jan 17 - Feb 1 $38.10, Feb 22 6:38 am $23.88, Feb 22 6:38 am $89.95, Jan 17 - Feb 1 $51.31, Feb 27 3:36 pm $23.72, Feb 27 3:36 pm $100.00, Mar 10 - Mar 16 $78.00, Mar 10 5:13 pm $23.68, Mar 10 5:13 pm $100.00, Mar 10 - Mar 16 $89.95, Mar 16 2:22 pm $56.61, Mar 16 2:22 pm $100.00, Mar 10 - Mar 16 $56.61, Mar 16 2:22 pm $68.61, Mar 28 3:02 am $62.65, Mar 28 3:02 am
174,840 2,428,244
2,734,375
1,822,917
911,458
0
Dec
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Price Details
New
Latest
$68.61 Mar 28, '16
Highest
$100.00 Mar 10, '16
Lowest
$38.10 Feb 22, '16
Average
$80.04 (30d avg) $83.66 (90d avg) $91.75 (180d avg) $86.67 (365d avg) $85.16 (Lifetime average)
Added
Oct 19, 2014
3rd Party New
Last Seen
$89.95 Mar 16, '16
Highest
$90.00 Oct 1, '15
Lowest
$78.00 Mar 10, '16
Average
$78.00 (30d avg) $89.07 (90d avg) $89.56 (180d avg) $84.91 (365d avg) $83.47 (Lifetime average)
Added
Oct 19, 2014
3rd Party Used
Latest
$62.65 Mar 28, '16
Highest
$70.00 Jun 3, '15
Lowest
$23.68 Mar 10, '16
Average
$36.59 (30d avg) $51.41 (90d avg) $60.84 (180d avg) $62.28 (365d avg) $61.80 (Lifetime average)
Added
Oct 19, 2014
Sales Rank
30 day average: 580,467 90 day average: 1,364,580
Product Description
In their most refined form, pendulum clocks keep astonishingly accurate time and are sensitive to the ebb and flow of the tide and even the quivering of the Earth itself. Great inventors such as Galileo, Huygens, and Kelvin devised mechanisms to maintain their even oscillations. Lesser known horologists such as John Harrison, Lord Grimthorpe, and William Shortt, also contributed greatly to the science of time-keeping. By reflecting on his own inventions and achievements, author Philip Woodward gives a highly readable and fascinating history of precision horology before the advent of atomic clocks and the quartz chip that will educate and entertain amateur horologists and scientists and engineers alike.
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