"Scale" word has a very different meaning in the context of image scaling and number scaling and can't be translated at Russian correctly for both cases.
I think should be added context for number variant or string should be changed to something else.

Scale for number at: modules/field/modules/number/number.module, row 71

    $form['scale'] = array(
      '#type' => 'select',
      '#title' => t('Scale'),
      '#options' => drupal_map_assoc(range(0, 10)),
      '#default_value' => $settings['scale'],
      '#description' => t('The number of digits to the right of the decimal.'),
      '#disabled' => $has_data,
    );

Scale for image at: modules/image/image.effects.inc, row 22

    'image_scale' => array(
      'label' => t('Scale'),
      'help' => t('Scaling will maintain the aspect-ratio of the original image. If only a single dimension is specified, the other dimension will be calculated.'),
      'effect callback' => 'image_scale_effect',
      'form callback' => 'image_scale_form',
      'summary theme' => 'image_scale_summary',
    ),