| Start Date
In US Unless otherwise stated |
Model No | Description |
| ??? | E703 | Lightometer – for general light intensity measurement rather than photography. |
| 614 | An “Illumination Meter” patented 1928 | |
| ? | Photo electric cine meter advertised in Jan 1932 in “American Photographer” | |
| 756 | Foot-candle meter used for Movie work including “Gone With The Wind” in 1939 | |
| 1932 | 617 | Universal – the original twin cell meter. |
| 1933 | 627 (Type 1) | Exposure meter for motion picture cameras. All 627s in the form of a jewellers loupe. Black metal cover, black plastic and chrome body. No dial |
| 627 (Type 1) | Cine Version | |
| 627 (Type 1) | Leicameter Version. | |
| 1934 | 617 Type 2 | Very much smaller, single cell version of the 617 |
| 627 Type 2 | Cine Type II exposure meter (could be 1933?) | |
| 627 Type 2 | Universal – smaller than 617 and with 1 cell | |
| 627 Type 2 | Universal Cine | |
| 627 Type 2 | Leicameter | |
| 1935 | 628 | Studio in oak carrying case with 617 style cell. Green marble models as well as black. |
| 650 | Universal. Small and big pointer models. Film speeds on early small pointer models only to 64 others to 250 Weston. May have been a model 632 round shape. | |
| 1937 | 819 | Cine – exactly like a 650 numbered out of series due to direct reading capability as on all future cine models. As with all future cine models, reads in half stops except 617 1/3 stops |
| 603 | An illumination meter often used for professional movie work | |
| 650 | Filmo Cine – (in round design may be 632) | |
| 1938 | 650 | Leicameter |
| 850 | Direct Reading Junior Cine | |
| 850 | Direct Reading Styled like 650 only smaller | |
| 628 Type 2 | Studio in oak carrying case with 650 style cell | |
| 1939/51(UK) | 715 / S74 | Master Universal – first of the master series. |
| 1939/41 | 715 | Leicameter |
| 715 | Bolex Meter Cine | |
| 720 | Master Cine | |
| 1945 | 735/S141 | Master II Universal. Made in grey as well as black all-metal case. Not made in UK as S141 till 1952 |
| 1946 | 736 | Master II Cine In grey and black |
| 1949 | 852 | Cadet Direct Reading. First with ASA speeds. Built in double invercones on back |
| 1953 | L III | Sekonic Master made under licence from Weston. Similar to Master II |
| ? | L-V | Sekonic Master made under licence from Weston. Similar to Master III |
| 1954 | 853 | Direct Reading |
| 1956 | 854 | Direct Reading – Green case large top dial and smaller under body (T shape) |
| 614 | Incident meter for movies in large case (From Popular Photography Directory) | |
| 737/S141.3 | Master III Universal – first with ASA speeds. Cast aluminium case. S141.3 in UK | |
| 1957 | S217.3 | Master III Cine Last Weston cine model UK Made only. |
| 1960 | 745 | Master IV Pointer lock aluminium and black case. Made UK Only. |
| ?? | L104 | Sekonic Master made under licence in Japan. Identical to Master IV except the name. Weston also sold a Sekonic made Weston IV branded version in some European countries |
| 1963 | 748 | Master V Universal. Pointer lock aluminium and grey case. Not made in the US. |
| 1966 | 348 | Ranger 9 Aluminium and black plastic case. US only not sold in UK |
| 1968 | 548 | Pixie with round case |
| 1972 | 540 | XM-1 Made in Japan by Sekonic |
| 550 | XM-2 Made in Japan by Sekonic, a cds model | |
| 560 | Master VI Made in Japan by Sekonic until 1974. | |
| 1973 | S461.6 | Europa (Euromaster in UK) Made only in UK only till 1980. Very similar to Master V Aluminium and grey plastic case. |
| Final USA Production | ||
| 1974 | Final Japan Production | |
| 1980 | Sangamo Weston (UK) stop production. manufacturing restarted by East Kilbride Instruments | |
| 1984 | East Kilbride Instruments liquidated, manufacturing restarted by Megatron in London. | |
| 1985 | Euromaster II made by Megatron in UK. | |
| 2010 Feb | Megatron stops trading. Weston meters are no longer manuactured. An era ends. | |
| NOTE:All Weston models were made in black plastic except where noted. S models were made in UK and possibly some in Hong Kong by Sangamo Weston. Other models made in US in Newark. | ||
via Chronology.
TLRgraphy 