Scale for Direct Reading in Degrees for Frame Spacing

frame spacing scale

PATTERNS & MOLDS
Tamm, Bror
USA, MA, Neponset
1916
wood
overall: 33-1/8 x 25-7/8 in.; arm (taking off): 2 x 31-7/8 in.; arm (actual bevels): 2-1/4 x 31-1/2 in.

Frame spacing scale; scale invented by Bror Tamm and used on all George Lawley & Son Corporation ships built after 1916; wood board with various scales for spacing frames, includes two moveable and removeable arms, one for taking off corrected planking thicknesses and one for determining actual bevels; handwritten on left "LONGITUDINAL - FRAME SPACING - CENTRE TO CENTRE", "ZERO/ POINT" and "SCALE FOR DIRECT READING - IN 'DEGREES' - FOR FRAMESPACINGS - ZERO TO 24" - INVENTED BY BROR TAMM - 1917 USED ON ALL LAWLEY SHIPS"; handwritten on bottom "<- BEVELS 'UNDER' -> <- 'STANDING' BEVELS ->" and "'PICKING UP STICK' FOR TRANSVERSE SPACE TWEEN MOULDED FRAME LINES - TAKEN AT GUNWALE - ALL DIAGONALS AND RABBET."; handwritten on taking off arm "MOULDED LINE/ ARM FOR 'TAKING OFF' CORRECTED/ PLANKING THICKNESSES ON VERY/ ROUND OR FULL BOWS AND STERNS/ TAMM INVENTED AND USED ON ALL LAWLEY SHIPS SINCE 1916"; handwritten on actual bevels arm "USE THIS ARM FOR ACTUAL BEVELS."

2002.94.65