Description | Regarding proposed arrangements for testing surveying and astronomical instruments for India. These arrangements are designed for larger instruments likely to be sent such as the three foot theodolite, the five foot transit instruments and the zenith sector currently under construction for the great trigonometrical survey. Lieutenant Colonel [Alexander] Strange argues the best way to test instruments is to set them up, adjust them and then make observations with them. Description of Strange’s recommendations to carry out this ‘principle’. |