Used in variable plot and Three P sampling. American Scale reads in English units (sq. ft./acre, inches, feet). Use where trees are smaller than 96” dbh on level or steep terrain. Metric Scale reads in metric units (sq. m/hectare, centimeters, meters). Excellent for a variety of forest conditions and tree sizes. Wide Scale is designed for metric measurements (diameter measurements convert to inches or centimeters). Recommended for trees larger than 244 cm (96”) dbh. Works on level or sloping terrain. CP Scale is ideal when metric or English measurements are desired (basal area in sq. m/hectare only). Leather case and illustrated booklet included.

Metric Standard, in previous years called “Metric Scale”, is especially suitable for forestry conditions of temperate climates with tree diameters of up to 80 centimeters, and is especially marked for measuring heights from the standard distances of 15, 20, 25 or 30 meters as introduced in general practice in certain regions.

Wide Scale, also called “virgin forest scale”, is a special scale developed for the measurement of large tree diameters at different heights, for angle-count sampling with large basal-area factors, and for simple surveying purposes.

Metric CP combines the functions of the Metric Standard and Wide Scale scales. For this reason, it is a very versatile choice.

The American Scale has functions analogous to Metric Scale, but the measurements are given in the American forestry dimensions of feet and inches.

A comparison between the possibilities of the different scales:

*º smaller values are possible with the quarter bars
*¹ with use of vertical or horizontal target, resp. Wedge Prism Attachment with vertical base
*² using RELASKOP distance scale and a vertical 2 m-target
*³ with use of horizontal staff of known length or percent scale with vertical 2 m-target or
Wedge Prism Attachment with vertical base

Features:

- Relaskops are the principle instrument of “variable plot sampling”, which has the special advantage

  of selecting a basal-area weighted distribution. In addition, the appropriate stem numbers per hectare

  can be derived from the ACS selection sample.
- Measurement of total tree height, or heights to particular upper stem diameters.Measurements of

  upper stem diameters at particular heights.
- Determining the horizontal distance, with automatic correction for the angle of inclination.
- Quick determination of the “slenderness” (height/diameter ratio) of standing trees.
- Determination of form heights, and the volumes of standing trees by Pressler’s formula.
- Determination of slope angles

What's in the Box:
- (1) Spiegel Relaskop Wide Scale
- (1) Operating instructions

Brochure/Datasheet
Instruction manual

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