L. Beckmann Dating Table

Here you will find information about how to date your L. Beckmann antique survey instruments.

Special thanks to Mike Lodzinski for putting this information together for us to share.

This table is intended as a rough guide to dating L. Beckmann Instruments. It is not known exactly when Beckmann began putting serial numbers on his instruments and no Beckmann records can be found for serial numbers 1-1006. It has been brought to our attention that there are instruments out there with serial numbers 606 and 824(shown below) so there are more serial numbers that exist between 1-1006 but no records to be able to date them by sales..

Serial numbers are referenced to records of the date of sale not date of manufacture, but these should be relatively close.


Serial Number --- Year
1007-1162 --- 1902
1163-1308 --- 1903
1309-1452 --- 1904
1453-1672 --- 1905
1673-1953 --- 1906
1954-2381 --- 1907
2382-2750 --- 1908

Serial Number --- Year
2751-3446 --- 1909
3447-4107 --- 1910
4108-4806 --- 1911
4807-5563 --- 1912
5564-6503 --- 1913
6504-7119 --- 1914
7120-7650 --- 1915

Serial Number --- Year
7651-8275 --- 1916
8276-8696 --- 1917
8697-8982 --- 1918
8983-9428 --- 1919
9429-9892 --- 1920

After 1920 sales dates vary widely between sequential numbers.

Serial Number --- Year Range
9893-10000 --- 1920-1923
10000-11000 --- 1923-1925
11000-11622 --- 1925-1940

Serial number locations on some L. Beckmann instruments.


Click on image to enlarge.
 
Possible Location On A Level
L. Beckmann Serial Number Location
Possible Location On A Level
L. Beckmann Serial Number Location
Possible Location On A Transit
L. Beckmann Serial Number Location
Possible Location On A Transit
L. Beckmann Serial Number Location