{{heading}}

{{calibrate_slider_txt}} {{calibration_value}}

{{start_txt}}

{{reset_txt}}

{{select_lamp_txt}} {{ x.lamp }}

{{light_on_off_txt}}

{{grating_txt}}

{{telescope_angle_txt}} {{telescope_angle}} {{vernier_table_angle_txt}} {{vernier_table_angle}} {{fine_angle_txt}} {{fine_angle}}

{{calibrate_txt}}