MOM MA-5 /360
telescopic alidade (topography angle plotter) with compass MOM   MA-5 /360
record number: 61
instrument type: telescopic alidade (topography angle plotter) with compass
manufacturer: MOM
serial number: 37462
model: MA-5 /360
weight: 3.72 kg
dimensions (l/w/h): 22/16/20 cm
year of manufacture: 1955
instrument set up: circular level (not attached)
horizontal circle (alidade) toric level
levelling toric level
vertical circle level
plumb bob
compass (division from -5° to 5°)

The plane table with telescopic alidade (kipregel) was made in 1955, at a time when graphic detailed measurement was becoming a thing of the past. A special bracket is added for centring the plane table. When preparing the instrument for measurement, as many as four toric levels are used. The table is roughly levelled with a separate circular level placed directly on the table. Horizontal circle (alidade) toric level allows fine levelling and the vertical circle index is controlled with a vertical circle level. A levelling toric level is mounted on the telescope.

A compass with a division for orienting the plane table with respect to magnetic north is added to the kipregel. The instrument resembles a self-reducing tacheometer in some respects. It has a vertical circle, and in the telescope the special shape of the crosshairs, with the use of a suitable tacheometric staff, enables direct measurement of horizontal distances and height differences.

The instrument was purchased for teaching purposes, but was not used much and is in excellent condition.

Characteristics
vertical circle
diameter: protected, 63 mm
type of division: engraved division
limb implementation: glass bracket
division: sexagesimal
unit:
Reading
number of reading points: 1
reading device: scale microscope
number of units: 12
graduation unit: 5'
Telescope
diameter of objective: 48 mm
magnification: 24 x, 30 x
type: telescope with internal focusing
cross hairs/reticule: self-reducing – basic hair, distance hair, elevation hairs, constant 100