A massive, heavy instrument made before the Hilger merger. Manuals for these are rare and written in a very formal, engineering-heavy style.
The Hilger & Watts theodolite is more than a relic; it is a masterpiece of 20th-century optics. By following the original manual, you ensure that this precision instrument continues to provide the same accuracy today as it did when it first left the London factory. hilger watts theodolite manual
The Hilger Watts theodolite manual should include detailed instructions on: A massive, heavy instrument made before the Hilger merger
Note: If using a Watts No. 2 (10-second), the micrometer scale usually reads in minutes and tens of seconds. If using a Watts No. 1 (1-second), it reads minutes, seconds, and fractions of seconds. By following the original manual, you ensure that
To correct for mechanical imperfections (collimation errors), always take two observations.