CUSTOM-CALIBRATED DIAL
The dial of each W&T Barometer is individually calibrated
over its complete range.
Custom dial calibration, precision mechanism construction,
and match dials and mechanisms give accuracies to 0.1% and sensitivities
to 0.01% of full scale.
DURABLE AND CONVENIENT
Although
sensitive, W&T Barometer mechanisms are not fragile; they resist damage
during on-the-job handling.
EXCELLENT
READABILITY
W&T
Barometers have scales from 16 to 35 inches long. Long scales mean many
graduations can be used to cover the full range. In the highest range (13
to 30.5 in. Hg), the minimum graduation represent 0.02 in. Hg. With the
knife-edge pointer, this allows readings to better than 0.02% of full
scale. A mirror ring eliminated parallax errors
PRECISION
CONSTRUCTION
A small
sensitive capsule responds to minute pressure changes. The almost
frictionless linkage contains flexures and jewel bearings and is not
lubricated. Low inertia parts throughout gives W&T Barometers fast
response speed and high sensitivity.
Calibrations and Repairs