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Instrument Shop

Goodsell Instruments

Carleton College is the home of the historic Goodsell Observatory.  The Instrument Shop is responsible for the care and preservation of the instruments used in the observatory in its early days when it was an important research location and center for time keeping.

E. Howard Clock 195

E. Howard Clock Serial Number 195 is the sidereal clock in the Goodsell rotunda.
Carleton E. Howard Clock Serial Number 195

E. Howard Clock 196

E. Howard Clock Serial Number 196 is the solar clock in the Goodsell rotunda.
Carleton E. Howard Clock Serial Number 196

Riefler Tank Clock

The Riefler Tank clock, SN 227.
Carleton Riefler Clock SN 227

E. Howard Model 89

Images of the Carleton E. Howard model number 89, before and after cleaning.
Carleton's E. Howard Model 89.
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      • E. Howard Clock 195
      • E. Howard Clock 196
      • Riefler Tank Clock
      • E. Howard Model 89
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Instrument Shop

Instrument Project Manager: Aaron Heidgerken-Greene
Email: ajhg@carleton.edu
Phone: 507-222-4373
Office Hours: Mon–Fri: 9 a.m.–noon
Instrument Shop pages maintained by Aaron Heidgerken-Greene
This page was last updated on 30 September 2026
Carleton

One North College StNorthfield, MN 55057USA

507-222-4000

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